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Niphargus-Thiothrix associations may be widespread in sulphidic groundwater ecosystems: evidence from southeastern Romania. (2018)

Flot, Jean-François ; Bauermeister, Jan ; Brad, Traian ; [weitere]

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Publikationsdatum: 2021-04-25

Beschreibung: Niphargus is a speciose amphipod genus found in groundwater habitats across Europe. Three Niphargus species living in the sulphidic Frasassi caves in Italy harbour sulphur-oxidizing Thiothrix bacterial ectosymbionts. These three species are distantly related, implying that the ability to form ectosymbioses with Thiothrix may be common among Niphargus. Therefore, Niphargus-Thiothrix associations may also be found in sulphidic aquifers other than Frasassi. In this study, we examined this possibility by analysing niphargids of the genera Niphargus and Pontoniphargus collected from the partly sulphidic aquifers of the Southern Dobrogea region of Romania, which are accessible through springs, wells and Movile Cave. Molecular and morphological analyses revealed seven niphargid species in this region. Five of these species occurred occasionally or exclusively in sulphidic locations, whereas the remaining two were restricted to nonsulphidic areas. Thiothrix were detected by PCR on all seven Dobrogean niphargid species and observed using microscopy to be predominantly attached to their hosts' appendages. 16S rRNA gene sequences of the Thiothrix epibionts fell into two main clades, one of which (herein named T4) occurred solely on niphargids collected in sulphidic locations. The other Thiothrix clade was present on niphargids from both sulphidic and nonsulphidic areas and indistinguishable from the T3 ectosymbiont clade previously identified on Frasassi-dwelling Niphargus. Although niphargids from Frasassi and Southern Dobrogea are not closely related, the patterns of their association with Thiothrix are remarkably alike. The finding of similar Niphargus-Thiothrix associations in aquifers located 1200 km apart suggests that they may be widespread in European groundwater ecosystems.

Schlagwort(e): amphipods; ecology; sulphide; symbiosis; systematics; taxonomy ; 551 ; Amphipoda ; Animals ; DNA, Bacterial ; Ecosystem ; Groundwater ; Molecular Sequence Data ; Phylogeny ; RNA, Ribosomal, 16S ; Romania ; Sequence Analysis, DNA ; Sulfur ; Symbiosis ; Thiothrix

Sprache: Englisch , Englisch

Materialart: article , publishedVersion

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Majorana corner states in a two-dimensional magnetic topological insulator on a high-temperature superconductor (2018)

Tao Liu, James Jun He, and Franco Nori (野理)

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-14

Beschreibung: Author(s): Tao Liu, James Jun He, and Franco Nori (野理) Conventional n -dimensional topological superconductors (TSCs) have protected gapless ( n − 1 ) -dimensional boundary states. In contrast to this, second-order TSCs are characterized by topologically protected gapless ( n − 2 ) -dimensional states with the usual gapped ( n − 1 ) boundaries. Here, we study a second... [Phys. Rev. B 98, 245413] Published Thu Dec 13, 2018

Schlagwort(e): Surface physics, nanoscale physics, low-dimensional systems

Print ISSN: 1098-0121

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Thema: Physik

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Multilayer-by-multilayer surface melting of Cu(200) (2018)

Kai Wang, Haizhen Wu, Mengke Ge, Xingang Hou, Ning Liu, Jia He, Wei Xi, and Jun Luo

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-26

Beschreibung: Author(s): Kai Wang, Haizhen Wu, Mengke Ge, Xingang Hou, Ning Liu, Jia He, Wei Xi, and Jun Luo It is well known that surface melting of metal materials is caused by vacancies, and melting proceeds layer by layer in theoretical predictions. However, the melting process has rarely been directly investigated in real time at atomic resolution. Herein, the (200) surface-melting process of Cu nanop... [Phys. Rev. B 98, 045425] Published Wed Jul 25, 2018

Schlagwort(e): Surface physics, nanoscale physics, low-dimensional systems

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Thema: Physik

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Closed-form expressions for effective constitutive parameters: Electrostrictive and magnetostrictive tensors for bianisotropic metamaterials and their use in optical force density calculations (2018)

Neng Wang, Shubo Wang, Zhao-Qing Zhang, and C. T. Chan

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-26

Beschreibung: Author(s): Neng Wang, Shubo Wang, Zhao-Qing Zhang, and C. T. Chan Using a multiple scattering technique, we derived closed-form expressions for effective constitutive parameters and electro/magneto-strictive tensor components for 2D bianisotropic metamaterials. Using the principle of virtual work, we obtained the electromagnetic stress tensor that can be used to c... [Phys. Rev. B 98, 045426] Published Wed Jul 25, 2018

Schlagwort(e): Surface physics, nanoscale physics, low-dimensional systems

Print ISSN: 1098-0121

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Optimizing the signal-to-noise ratio of biphoton distribution measurements (2018)

Matthew Reichert, Hugo Defienne, and Jason W. Fleischer

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-07-27

Beschreibung: Author(s): Matthew Reichert, Hugo Defienne, and Jason W. Fleischer Single-photon-sensitive cameras can now be used as massively parallel coincidence counters for entangled photon pairs. This enables measurement of biphoton joint probability distributions with orders-of-magnitude greater dimensionality and faster acquisition speeds than traditional raster scanning o... [Phys. Rev. A 98, 013841] Published Thu Jul 26, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

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Exchange of optical vortices using an electromagnetically-induced-transparency–based four-wave-mixing setup (2018)

Hamid Reza Hamedi, Julius Ruseckas, and Gediminas Juzeliūnas

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-07-27

Beschreibung: Author(s): Hamid Reza Hamedi, Julius Ruseckas, and Gediminas Juzeliūnas We propose a scheme to exchange optical vortices of slow light using the phenomenon of electromagnetically induced transparency in a four-level double- Λ atom-light coupling scheme illuminated by a pair of probe fields as well as two control fields of larger intensity. We study the light-matter inter... [Phys. Rev. A 98, 013840] Published Thu Jul 26, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Narrowband terahertz radiation by impulsive stimulated Raman scattering in an above-room-temperature organic ferroelectric benzimidazole (2018)

M. Sotome, N. Kida, S. Horiuchi, and H. Okamoto

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-07-27

Beschreibung: Author(s): M. Sotome, N. Kida, S. Horiuchi, and H. Okamoto In noncentrosymmetric media, optical rectification is known to be a general mechanism of the generation of terahertz electromagnetic waves. Here, we show that effective terahertz radiation is possible via a different mechanism in a hydrogen-bonded organic molecular ferroelectric 5,6-dichloro-2-methy... [Phys. Rev. A 98, 013843] Published Thu Jul 26, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Quasistatic precursors of ultrashort laser pulses in electro-optic crystals (2018)

E. S. Efimenko, S. A. Sychugin, M. V. Tsarev, and M. I. Bakunov

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-07-27

Beschreibung: Author(s): E. S. Efimenko, S. A. Sychugin, M. V. Tsarev, and M. I. Bakunov It was recently predicted [M. I. Bakunov, A. V. Maslov, and M. V. Tsarev, Phys. Rev. A 95 , 063817 (2017) ] that simultaneous optical rectification and multiphoton absorption of an ultrashort laser pulse in an electro-optic crystal can generate a quasistatic electromagnetic precursor propagating ahead... [Phys. Rev. A 98, 013842] Published Thu Jul 26, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Engineering quantum spin liquids and many-body Majorana states with a driven superconducting box circuit (2018)

Fan Yang, Loïc Henriet, Ariane Soret, and Karyn Le Hur

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-27

Beschreibung: Author(s): Fan Yang, Loïc Henriet, Ariane Soret, and Karyn Le Hur We design a driven superconducting box with four spins S = 1 / 2 (qubits) such that coupled devices can give insight on the occurrence of quantum spin liquids and many-body Majorana states. Within one box or island, we introduce a generalized nuclear magnetic resonance algorithm to realize our models an... [Phys. Rev. B 98, 035431] Published Thu Jul 26, 2018

Schlagwort(e): Surface physics, nanoscale physics, low-dimensional systems

Print ISSN: 1098-0121

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Thema: Physik

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Microwave generation on an optical carrier in microresonator chains (2018)

Andrea Armaroli, Patrice Féron, and Yannick Dumeige

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-07-28

Beschreibung: Author(s): Andrea Armaroli, Patrice Féron, and Yannick Dumeige We consider self-pulsing regimes in chains of Kerr nonlinear optical microresonators. By means of a supermodal diagonalization procedure of the conventional coupled-mode theory in time, we theoretically and numerically study the bifurcation diagrams of a singly pumped three-cavity and a doubly pumpe... [Phys. Rev. A 98, 013848] Published Fri Jul 27, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Fingerprints of Berry phases in the bulk exciton spectrum of a topological insulator (2018)

Andrew A. Allocca, Dmitry K. Efimkin, and Victor M. Galitski

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-28

Beschreibung: Author(s): Andrew A. Allocca, Dmitry K. Efimkin, and Victor M. Galitski We examine excitons formed in the bulk of a topological insulator as the system is tuned via a parameter between topological and trivial insulating phases, arguing that nontrivial topology has fingerprints in the spectrum of these excitons. The closely related hydrogen atom problem is well known to ... [Phys. Rev. B 98, 045430] Published Fri Jul 27, 2018

Schlagwort(e): Surface physics, nanoscale physics, low-dimensional systems

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Structural, vibrational, and electronic properties of single-layer hexagonal crystals of group IV and V elements (2018)

Burak Özdamar, Gözde Özbal, M. Neşet Çınar, Koray Sevim, Gizem Kurt, Birnur Kaya, and Hâldun Sevinçli

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-28

Beschreibung: Author(s): Burak Özdamar, Gözde Özbal, M. Neşet Çınar, Koray Sevim, Gizem Kurt, Birnur Kaya, and Hâldun Sevinçli Using first-principles density functional theory calculations, we investigate a family of stable two-dimensional crystals with chemical formula A 2 B 2 , where A and B belong to groups IV and V, respectively ( A = C , Si, Ge, Sn, Pb; B = N , P, As, Sb, Bi). Two structural symmetries of hexagonal lattices P 6 ¯ m 2 ... [Phys. Rev. B 98, 045431] Published Fri Jul 27, 2018

Schlagwort(e): Surface physics, nanoscale physics, low-dimensional systems

Print ISSN: 1098-0121

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Relation between absorption and emission directivities for dipoles coupled with optical antennas (2018)

Zhexin Zhao, Yu Shi, Kaifeng Chen, and Shanhui Fan

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-07-28

Beschreibung: Author(s): Zhexin Zhao, Yu Shi, Kaifeng Chen, and Shanhui Fan An in-depth theoretical analysis of optical antennas is presented. The study is not only helpful for the understanding of fundamental questions, such as the subtleties of reciprocity between the absorption and emission processes of emitters coupled with optical antennas, but it may also contribute to better design antennas for a given application. [Phys. Rev. A 98, 013845] Published Fri Jul 27, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Adiabatic flux insertion and growing of Laughlin states of cavity Rydberg polaritons (2018)

Peter A. Ivanov, Fabian Letscher, Jonathan Simon, and Michael Fleischhauer

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-07-28

Beschreibung: Author(s): Peter A. Ivanov, Fabian Letscher, Jonathan Simon, and Michael Fleischhauer Recently, the creation of a strong magnetic field in a photonic cavity system has been demonstrated [N. Schine et al. , Nature (London) 534 , 671 (2016) .]. Using this setup, we propose a scheme to adiabatically transfer flux quanta simultaneously to all cavity photons. The flux transfer is achieved u... [Phys. Rev. A 98, 013847] Published Fri Jul 27, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Optical levitation and feedback cooling of a nanoparticle at subwavelength distances from a membrane (2018)

Rozenn Diehl, Erik Hebestreit, René Reimann, Felix Tebbenjohanns, Martin Frimmer, and Lukas Novotny

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-07-31

Beschreibung: Author(s): Rozenn Diehl, Erik Hebestreit, René Reimann, Felix Tebbenjohanns, Martin Frimmer, and Lukas Novotny Optomechanical control of a levitated nanoparticle at subwavelength distances from an interface is demonstrated. The advances in terms of force sensitivity and positioning are relevant for the characterization of short-range interactions, such as Casimir forces, and for building on-chip levitated-optomechanical devices, among others. [Phys. Rev. A 98, 013851] Published Mon Jul 30, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Phase transitions on a ladder of braided non-Abelian anyons (2018)

Babatunde M. Ayeni, Robert N. C. Pfeifer, and Gavin K. Brennen

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-31

Beschreibung: Author(s): Babatunde M. Ayeni, Robert N. C. Pfeifer, and Gavin K. Brennen Non-Abelian anyons can exist as pointlike particles in two-dimensional systems and have particle exchange statistics which are neither bosonic nor fermionic. Like in spin systems, the role of fusion (Heisenberg-like) interactions between anyons has been well studied. However, unlike our understandin... [Phys. Rev. B 98, 045432] Published Mon Jul 30, 2018

Schlagwort(e): Surface physics, nanoscale physics, low-dimensional systems

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Transmission stabilization in soliton-based optical-waveguide systems by frequency-dependent linear gain-loss and the Raman self-frequency shift (2018)

Avner Peleg and Debananda Chakraborty

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-07-31

Beschreibung: Author(s): Avner Peleg and Debananda Chakraborty We study transmission stabilization against radiation emission and enhancement of transmission quality in soliton-based nonlinear optical waveguides with weak linear gain-loss, cubic loss, and delayed Raman response. We show by numerical simulations with perturbed nonlinear Schrödinger propagation m... [Phys. Rev. A 98, 013853] Published Mon Jul 30, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Resonance energy transfer between two atoms in a conducting cylindrical waveguide (2018)

Giuseppe Fiscelli, Lucia Rizzuto, and Roberto Passante

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-07-31

Beschreibung: Author(s): Giuseppe Fiscelli, Lucia Rizzuto, and Roberto Passante We consider the energy transfer process between two identical atoms placed inside a perfectly conducting cylindrical waveguide. We first introduce a general analytical expression of the energy transfer amplitude in terms of the electromagnetic Green's tensor; we then evaluate it in the case of a cyl... [Phys. Rev. A 98, 013849] Published Mon Jul 30, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Optical chirality density and flux measured in the local density of states of spiral plasmonic structures (2018)

Aline Pham, Airong Zhao, Cyriaque Genet, and Aurélien Drezet

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-07-25

Beschreibung: Author(s): Aline Pham, Airong Zhao, Cyriaque Genet, and Aurélien Drezet Efforts to improve enantioselective detection of chiral molecules have initiated great interest in the fields of chiral light and chiral plasmonics. While superchiral light had been reported as highly sensitive enantiomer probes, optical response of chiral molecules can also be boosted at the vicini... [Phys. Rev. A 98, 013837] Published Tue Jul 24, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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One- and two-dimensional Raman-induced diffraction gratings in atomic media (2018)

V. G. Arkhipkin and S. A. Myslivets

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-07-25

Beschreibung: Author(s): V. G. Arkhipkin and S. A. Myslivets We propose and analyze an efficient scheme for the one- and two-dimensional atomic gratings based on periodic spatial modulation of the Raman gain and dispersion, which we name the Raman-induced diffraction gratings (RIDGs). There are fundamentally different from those based on electromagnetically i... [Phys. Rev. A 98, 013838] Published Tue Jul 24, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Twofold mechanical squeezing in a cavity optomechanical system (2018)

Chang-Sheng Hu, Zhen-Biao Yang, Huaizhi Wu, Yong Li, and Shi-Biao Zheng

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-08-07

Beschreibung: Author(s): Chang-Sheng Hu, Zhen-Biao Yang, Huaizhi Wu, Yong Li, and Shi-Biao Zheng We investigate the dynamics of an optomechanical system where a cavity with a movable mirror involves a degenerate optical parametric amplifier and is driven by a periodically modulated laser field. Our results show that the cooperation between the parametric driving and periodically modulated cavit... [Phys. Rev. A 98, 023807] Published Mon Aug 06, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Transverse Anderson localization of channel plasmon polaritons (2018)

J. Petráček and V. Kuzmiak

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-08-07

Beschreibung: Author(s): J. Petráček and V. Kuzmiak We studied numerically the effect of disorder on the propagation of the channel plasmon polaritons (CPP) in arrays of evanescently coupled rectangular grooves cut into the planar surface of metal in contact with vacuum or a dielectric medium. The grooves are assumed to be of the same width and depth... [Phys. Rev. A 98, 023806] Published Mon Aug 06, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Topological photonic states in one-dimensional dimerized ultracold atomic chains (2018)

B. X. Wang and C. Y. Zhao

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-08-07

Beschreibung: Author(s): B. X. Wang and C. Y. Zhao We study the topological optical states in one-dimensional dimerized ultracold atomic chains, as an extension of the Su-Schrieffer-Heeger (SSH) model. By taking the fully retarded near-field and far-field dipole-dipole interactions into account, we describe the system by an effective non-Hermitian H... [Phys. Rev. A 98, 023808] Published Mon Aug 06, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Andreev transport through single-molecule magnets (2018)

F. Pawlicki and I. Weymann

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-08

Beschreibung: Author(s): F. Pawlicki and I. Weymann The Andreev transport through a large-spin magnetic molecule, such as a single molecular magnet, attached to superconducting and ferromagnetic leads is studied theoretically by means of the real-time diagrammatic technique. It is shown that due to the proximity effect, molecular Andreev bound states... [Phys. Rev. B 98, 085411] Published Tue Aug 07, 2018

Schlagwort(e): Surface physics, nanoscale physics, low-dimensional systems

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Two-phonon Raman bands of single-walled carbon nanotubes: A case study (2018)

Valentin N. Popov

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-08

Beschreibung: Author(s): Valentin N. Popov It has been long accepted that the second-order Raman bands in carbon nanotubes are enhanced through the double-resonance mechanism. Although separate aspects of this mechanism have been studied for a few second-order Raman bands, including the most intense defect-induced D band and the two-phonon 2... [Phys. Rev. B 98, 085413] Published Tue Aug 07, 2018

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Shubnikov–de Haas oscillations in the anomalous Hall conductivity of Chern insulators (2018)

Luis M. Canonico, Jose H. García, Tatiana G. Rappoport, Aires Ferreira, and R. B. Muniz

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-07

Beschreibung: Author(s): Luis M. Canonico, Jose H. García, Tatiana G. Rappoport, Aires Ferreira, and R. B. Muniz The Haldane model on a honeycomb lattice is a paradigmatic example of a system featuring quantized Hall conductivity in the absence of an external magnetic field, that is, a quantum anomalous Hall effect. Recent theoretical work predicted that the anomalous Hall conductivity of massive Dirac fermion... [Phys. Rev. B 98, 085409] Published Mon Aug 06, 2018

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Second harmonic generation in the plasmon-polariton gap of quasiperiodic metamaterial photonic superlattices (2018)

F. Reyes Gómez, N. Porras-Montenegro, Osvaldo N. Oliveira, Jr., and J. R. Mejía-Salazar

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-08

Beschreibung: Author(s): F. Reyes Gómez, N. Porras-Montenegro, Osvaldo N. Oliveira, Jr., and J. R. Mejía-Salazar Self-similar bulk plasmon-polariton modes in quasiperiodic photonic superlattices were used here for a giant enhancement of second harmonic generation. Results for Fibonacci and Thue-Morse-like superlattices indicate that not only the disorder but also the symmetry of the unit cell plays a crucial r... [Phys. Rev. B 98, 075406] Published Tue Aug 07, 2018

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Coherent quantum dynamics launched by incoherent relaxation in a quantum circuit simulator of a light-harvesting complex (2018)

A. W. Chin, E. Mangaud, O. Atabek, and M. Desouter-Lecomte

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-06-13

Beschreibung: Author(s): A. W. Chin, E. Mangaud, O. Atabek, and M. Desouter-Lecomte Engineering and harnessing coherent excitonic transport in organic nanostructures has recently been suggested as a promising way towards improving manmade light-harvesting materials. However, realizing and testing the dissipative system-environment models underlying these proposals is presently very... [Phys. Rev. A 97, 063823] Published Tue Jun 12, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Polarization-controlled coherent phonon generation in acoustoplasmonic metasurfaces (2018)

Norberto D. Lanzillotti-Kimura, Kevin P. O’Brien, Junsuk Rho, Haim Suchowski, Xiaobo Yin, and Xiang Zhang

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-05

Beschreibung: Author(s): Norberto D. Lanzillotti-Kimura, Kevin P. O’Brien, Junsuk Rho, Haim Suchowski, Xiaobo Yin, and Xiang Zhang Acoustic vibrations at the nanoscale (GHz-THz frequencies) and their interactions with electrons, photons, and other excitations are the heart of an emerging field in physics: nanophononics. The design of ultrahigh frequency acoustic-phonon transducers, with tunable frequency, and easy to integrate ... [Phys. Rev. B 97, 235403] Published Mon Jun 04, 2018

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Intrinsic and anisotropic Rashba spin splitting in Janus transition-metal dichalcogenide monolayers (2018)

Tao Hu, Fanhao Jia, Guodong Zhao, Jiongyao Wu, Alessandro Stroppa, and Wei Ren

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-05

Beschreibung: Author(s): Tao Hu, Fanhao Jia, Guodong Zhao, Jiongyao Wu, Alessandro Stroppa, and Wei Ren Transition-metal dichalcogenides (TMDs) monolayers have been considered as important two-dimensional semiconductor materials for the study of fundamental physics in the field of spintronics. However, the out-of-plane mirror symmetry in TMDs may constrain electrons' degrees of freedom and it may limi... [Phys. Rev. B 97, 235404] Published Mon Jun 04, 2018

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Interface-induced spin-orbit interaction in silicon quantum dots and prospects for scalability (2018)

Rifat Ferdous, Kok W. Chan, Menno Veldhorst, J. C. C. Hwang, C. H. Yang, Harshad Sahasrabudhe, Gerhard Klimeck, Andrea Morello, Andrew S. Dzurak, and Rajib Rahman

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-05

Beschreibung: Author(s): Rifat Ferdous, Kok W. Chan, Menno Veldhorst, J. C. C. Hwang, C. H. Yang, Harshad Sahasrabudhe, Gerhard Klimeck, Andrea Morello, Andrew S. Dzurak, and Rajib Rahman We identify the presence of monatomic steps at the Si/SiGe or Si / SiO 2 interface as a dominant source of variations in the dephasing time of silicon (Si) quantum dot (QD) spin qubits. First, using atomistic tight-binding calculations we show that the g -factors and their Stark shifts undergo variation... [Phys. Rev. B 97, 241401(R)] Published Mon Jun 04, 2018

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Strong and weak second-order topological insulators with hexagonal symmetry and ℤ${}_{3}$ index (2018)

Motohiko Ezawa

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-05

Beschreibung: Author(s): Motohiko Ezawa We propose second-order topological insulators (SOTIs) whose lattice structure has a hexagonal symmetry C 6 . We start with a three-dimensional weak topological insulator constructed on a stacked triangular lattice, which has only side topological surface states. We then introduce an additional mass t... [Phys. Rev. B 97, 241402(R)] Published Mon Jun 04, 2018

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Single photon at a configurable quantum-memory-based beam splitter (2018)

Xianxin Guo, Yefeng Mei, and Shengwang Du

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-06-06

Beschreibung: Author(s): Xianxin Guo, Yefeng Mei, and Shengwang Du We report the demonstration of a configurable coherent quantum-memory-based beam splitter (BS) for a single-photon wave packet making use of laser-cooled Rb 85 atoms and electromagnetically induced transparency. The single-photon wave packet is converted (stored) into a collective atomic spin state a... [Phys. Rev. A 97, 063805] Published Tue Jun 05, 2018

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Bistability of a slow mechanical oscillator coupled to a laser-driven two-level system (2018)

Fabio Pistolesi

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-06-16

Beschreibung: Author(s): Fabio Pistolesi It has been recently proposed that single molecule spectroscopy could be employed to detect the motion of nanomechanical resonators. Estimates of the coupling constant ( g ) between the molecular two-level system and the oscillator indicate that it can reach values much larger than the mechanical reso... [Phys. Rev. A 97, 063833] Published Fri Jun 15, 2018

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Light emission by accelerated electric, toroidal, and anapole dipolar sources (2018)

V. Savinov

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-06-16

Beschreibung: Author(s): V. Savinov Emission of electromagnetic radiation by accelerated particles with electric, toroidal, and anapole dipole moments is analyzed. It is shown that ellipticity of the emitted light can be used to differentiate between electric and toroidal dipole sources and that anapoles, elementary neutral nonradiati... [Phys. Rev. A 97, 063834] Published Fri Jun 15, 2018

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Berry curvature in monolayer ${\mathrm{MoS}}_{2}$ with broken mirror symmetry (2018)

Kyung-Han Kim and Hyun-Woo Lee

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-16

Beschreibung: Author(s): Kyung-Han Kim and Hyun-Woo Lee An ideal 1 H phase monolayer MoS 2 has mirror reflection symmetry, but this symmetry is broken in common experimental situations, where the monolayer is placed on a substrate. By using k · p perturbation theory, we investigate the effect of mirror symmetry breaking on the Berry curvature of the material... [Phys. Rev. B 97, 235423] Published Fri Jun 15, 2018

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Quantum master equation with dissipators regularized by thermal fluctuations (2018)

Arnab Chakrabarti and Rangeet Bhattacharyya

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-06-19

Beschreibung: Author(s): Arnab Chakrabarti and Rangeet Bhattacharyya We report an alternate formulation of the quantum master equation (QME) to describe the dynamics of a quantum system weakly coupled to a heat bath, in the presence of weak external driving. A key feature of this approach is the introduction of an explicit Hamiltonian to model the thermal fluctuation... [Phys. Rev. A 97, 063837] Published Mon Jun 18, 2018

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Effective electric-field force for a photon in a synthetic frequency lattice created in a waveguide modulator (2018)

Chengzhi Qin, Luqi Yuan, Bing Wang, Shanhui Fan, and Peixiang Lu

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-06-19

Beschreibung: Author(s): Chengzhi Qin, Luqi Yuan, Bing Wang, Shanhui Fan, and Peixiang Lu Here we create an effective electric field force for photon in a synthetic frequency lattice to control the spectrum of light. The frequency lattice is created based on an optical waveguide modulator in which the dynamic index modulation can induce photonic transitions between adjacent lattice sites... [Phys. Rev. A 97, 063838] Published Mon Jun 18, 2018

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Broadband terahertz radiation from two-color mid- and far-infrared laser filaments in air (2018)

Alisée Nguyen, Pedro González de Alaiza Martínez, Illia Thiele, Stefan Skupin, and Luc Bergé

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-06-19

Beschreibung: Author(s): Alisée Nguyen, Pedro González de Alaiza Martínez, Illia Thiele, Stefan Skupin, and Luc Bergé We study terahertz (THz) emission by two-color femtosecond filaments in air using pump wavelengths λ 0 from 0.8 to 10.6 μ m . Comprehensive three-dimensional numerical simulations show that tens-of-centimeter long filaments created by a 10.6- μ m pump pulse can produce mJ energy yields and GV/m field str... [Phys. Rev. A 97, 063839] Published Mon Jun 18, 2018

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Exciton-polarons in doped semiconductors in a strong magnetic field (2018)

Dmitry K. Efimkin and Allan H. Mac; Donald

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-22

Beschreibung: Author(s): Dmitry K. Efimkin and Allan H. MacDonald In previous work, we have argued that the optical properties of moderately doped two-dimensional semiconductors can be described in terms of excitons dressed by their interactions with a degenerate Fermi sea of additional charge carriers. These interactions split the bare exciton into attractive and... [Phys. Rev. B 97, 235432] Published Thu Jun 21, 2018

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Atomic visualization of copper oxide structure in the infinite-layer cuprate $\mathrm{SrCu}{\mathrm{O}}_{2}$ (2018)

Yong Zhong, Sha Han, Yang Wang, Zhiling Luo, Ding Zhang, Lili Wang, Wei Li, Ke He, Can-Li Song, Xu-Cun Ma, and Qi-Kun Xue

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-23

Beschreibung: Author(s): Yong Zhong, Sha Han, Yang Wang, Zhiling Luo, Ding Zhang, Lili Wang, Wei Li, Ke He, Can-Li Song, Xu-Cun Ma, and Qi-Kun Xue We report the atomic-scale structure of epitaxial films of the parent infinite-layer compound SrCu O 2 prepared on SrTiO 3 by molecular beam epitaxy. In situ scanning tunneling microscopy study reveals a stoichiometric copper oxide ( CuO 2 ) -terminated surface featured by 2 × 2 reconstruction, caused prima... [Phys. Rev. B 97, 245420] Published Fri Jun 22, 2018

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Temperature-dependent terahertz spectroscopy of inverted-band three-layer InAs/GaSb/InAs quantum well (2018)

S. S. Krishtopenko, S. Ruffenach, F. Gonzalez-Posada, G. Boissier, M. Marcinkiewicz, M. A. Fadeev, A. M. Kadykov, V. V. Rumyantsev, S. V. Morozov, V. I. Gavrilenko, C. Consejo, W. Desrat, B. Jouault, W. Knap, E. Tournié, and F. Teppe

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-23

Beschreibung: Author(s): S. S. Krishtopenko, S. Ruffenach, F. Gonzalez-Posada, G. Boissier, M. Marcinkiewicz, M. A. Fadeev, A. M. Kadykov, V. V. Rumyantsev, S. V. Morozov, V. I. Gavrilenko, C. Consejo, W. Desrat, B. Jouault, W. Knap, E. Tournié, and F. Teppe We report on temperature-dependent terahertz spectroscopy of a three-layer InAs/GaSb/InAs quantum well (QW) with inverted-band structure. The interband optical transitions, measured up to 16 T at different temperatures by Landau-level magnetospectroscopy, demonstrate the inverted-band structure of t... [Phys. Rev. B 97, 245419] Published Fri Jun 22, 2018

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Molecular dynamics studies of ion beam implantation and patterning of silicon: Effect of noble gas cluster formation (2018)

Michael A. Lively, Samuel X. Bennett, and Jean Paul Allain

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-27

Beschreibung: Author(s): Michael A. Lively, Samuel X. Bennett, and Jean Paul Allain The use of energetic ion beams to induce nanopattern formation at surfaces has been well studied both experimentally and theoretically. However, the influence on morphological evolution of the implanted species themselves remains little understood, particularly in the case when the incident ion spec... [Phys. Rev. B 97, 235443] Published Tue Jun 26, 2018

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Magnetoplasmonic enhancement of Faraday rotation in patterned graphene metasurfaces (2018)

Michele Tamagnone, Tetiana M. Slipchenko, Clara Moldovan, Peter Q. Liu, Alba Centeno, Hamed Hasani, Amaia Zurutuza, Adrian M. Ionescu, Luis Martin-Moreno, Jérôme Faist, Juan R. Mosig, Alexey B. Kuzmenko, and Jean-Marie Poumirol

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-27

Beschreibung: Author(s): Michele Tamagnone, Tetiana M. Slipchenko, Clara Moldovan, Peter Q. Liu, Alba Centeno, Hamed Hasani, Amaia Zurutuza, Adrian M. Ionescu, Luis Martin-Moreno, Jérôme Faist, Juan R. Mosig, Alexey B. Kuzmenko, and Jean-Marie Poumirol Faraday rotation is a fundamental property present in all nonreciprocal optical elements. In the THz range, graphene displays strong Faraday rotation; unfortunately, it is limited to frequencies below the cyclotron resonance. Here, we show experimentally that in specifically designed metasurfaces, m... [Phys. Rev. B 97, 241410(R)] Published Tue Jun 26, 2018

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Band-edge levels of the NaCl(100) surface: Self-consistent hybrid density functional theory compared to many-body perturbation theory (2018)

Manuel Hochheim and Thomas Bredow

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-28

Beschreibung: Author(s): Manuel Hochheim and Thomas Bredow The electronic gap of bulk NaCl and the band-edge levels of the NaCl(100) surface are calculated using GW methods and self-consistent dielectric dependent hybrid functionals. Optical spectra are calculated by solving the Bethe-Salpeter equations (GW-BSE). For the calculation of the electronic struct... [Phys. Rev. B 97, 235447] Published Wed Jun 27, 2018

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Interplay of the Kondo effect with the induced pairing in electronic and caloric properties of T-shaped double quantum dots (2018)

Krzysztof P. Wójcik and Ireneusz Weymann

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-06-28

Beschreibung: Author(s): Krzysztof P. Wójcik and Ireneusz Weymann We examine the influence of the superconducting proximity effect on the transport properties of a T-shaped double quantum dot strongly coupled to two normal, nonmagnetic or ferromagnetic leads. We show that the two-stage Kondo screening may be suppressed or enhanced by the presence of pairing correl... [Phys. Rev. B 97, 235449] Published Wed Jun 27, 2018

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Measurement of the Casimir force in a gas and in a liquid (2018)

Anne Le Cunuder, Artyom Petrosyan, George Palasantzas, Vitaly Svetovoy, and Sergio Ciliberto

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-11-29

Beschreibung: Author(s): Anne Le Cunuder, Artyom Petrosyan, George Palasantzas, Vitaly Svetovoy, and Sergio Ciliberto We present detailed measurements of the Casimir-Lifshitz force between two gold surfaces, performed in both gas (nitrogen) and liquid (ethanol) environments with the same apparatus and on the same spot of the sample. Furthermore, we study the role of double-layer forces in the liquid, and we show th... [Phys. Rev. B 98, 201408(R)] Published Wed Nov 28, 2018

Schlagwort(e): Surface physics, nanoscale physics, low-dimensional systems

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Screening cloud and non-Fermi-liquid scattering in topological Kondo devices (2018)

A. Latief and B. Béri

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-11-29

Beschreibung: Author(s): A. Latief and B. Béri The topological Kondo effect arises when conduction electrons in metallic leads are coupled to a mesoscopic superconducting island with Majorana fermions. Working with its minimal setup, we study the lead electron local tunneling density of states in its thermally smeared form motivated by scanning ... [Phys. Rev. B 98, 205427] Published Wed Nov 28, 2018

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Effect of the mechanical oscillator on the optical-response properties of an optical trimer system (2018)

Xiyun Li, Wenjie Nie, Aixi Chen, and Yueheng Lan

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-11-28

Beschreibung: Author(s): Xiyun Li, Wenjie Nie, Aixi Chen, and Yueheng Lan We propose theoretically a four-mode coupled optomechanical system to explore the optical-response properties of an optical trimer system consisting of a passive cavity, a no-loss-gain cavity, and an active cavity coupled with a mechanical oscillator. In the study, the passive cavity is driven by an... [Phys. Rev. A 98, 053848] Published Tue Nov 27, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Aberrated dark-field imaging systems (2018)

Mario A. Beltran and David M. Paganin

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-11-28

Beschreibung: Author(s): Mario A. Beltran and David M. Paganin We study generalized dark-field imaging systems. These are a subset of linear shift-invariant optical imaging systems that exhibit arbitrary aberrations and for which normally incident plane-wave input yields zero output. We write down the theory for the forward problem of imaging coherent scalar op... [Phys. Rev. A 98, 053849] Published Tue Nov 27, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Ultrastrong-coupling regime of nondipolar light-matter interactions (2018)

Simone Felicetti, Myung-Joong Hwang, and Alexandre Le Boité

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-11-30

Beschreibung: Author(s): Simone Felicetti, Myung-Joong Hwang, and Alexandre Le Boité We present a circuit-QED scheme which makes it possible to reach the ultrastrong-coupling regime of a nondipolar interaction between a single qubit and a quantum resonator. We show that the system Hamiltonian is well approximated by a two-photon quantum Rabi model and propose a simple scattering exp... [Phys. Rev. A 98, 053859] Published Thu Nov 29, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Asymptotic electron motion in the strongly-radiation-dominated regime (2018)

A. S. Samsonov, E. N. Nerush, and I. Yu. Kostyukov

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-11-30

Beschreibung: Author(s): A. S. Samsonov, E. N. Nerush, and I. Yu. Kostyukov We study electron motion in electromagnetic (EM) fields in the radiation-dominated regime. It is shown that the electron trajectories become close to some asymptotic trajectories in the strong-field limit. The description of the electron dynamics by these asymptotic trajectories significantly differ... [Phys. Rev. A 98, 053858] Published Thu Nov 29, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Phonon-induced linewidths of graphene electronic states (2018)

Bo Hellsing, Thomas Frederiksen, Federico Mazzola, Thiagarajan Balasubramanian, and Justin W. Wells

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-11-30

Beschreibung: Author(s): Bo Hellsing, Thomas Frederiksen, Federico Mazzola, Thiagarajan Balasubramanian, and Justin W. Wells The linewidths of the π and σ bands originating from the electron-phonon coupling in graphene are analyzed based on model calculations and experimental angle-resolved photoemission spectroscopy (ARPES) data. We find evidence for crucial contributions to the lifetime broadening from interband scatter... [Phys. Rev. B 98, 205428] Published Thu Nov 29, 2018

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Possible flexoelectric origin of the Lifshitz transition in ${\mathrm{LaAlO}}_{3}/{\mathrm{SrTiO}}_{3}$ interfaces (2018)

Amany Raslan and W. A. Atkinson

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-01

Beschreibung: Author(s): Amany Raslan and W. A. Atkinson Multiple experiments have observed a sharp transition in the band structure of LaAlO 3 / SrTiO 3 (001) interfaces as a function of applied gate voltage. This Lifshitz transition, between a single occupied band at low electron density and multiple occupied bands at high density, is remarkable for its abr... [Phys. Rev. B 98, 195447] Published Fri Nov 30, 2018

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Spatial confinement, magnetic localization, and their interactions on massless Dirac fermions (2018)

Zhong-Qiu Fu, Yu Zhang, Jia-Bin Qiao, Dong-Lin Ma, Haiwen Liu, Zi-Han Guo, Yi-Cong Wei, Jing-Yi Hu, Qian Xiao, Xin-Rui Mao, and Lin He

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-04

Beschreibung: Author(s): Zhong-Qiu Fu, Yu Zhang, Jia-Bin Qiao, Dong-Lin Ma, Haiwen Liu, Zi-Han Guo, Yi-Cong Wei, Jing-Yi Hu, Qian Xiao, Xin-Rui Mao, and Lin He Understanding different approaches to confining massless Dirac fermions in graphene is of keen interest to researchers; it is also a central problem in making electronic devices based on graphene. Here, we studied spatial confinement, magnetic localization, and their interactions on massless Dirac f... [Phys. Rev. B 98, 241401(R)] Published Mon Dec 03, 2018

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Sign inversion in the terahertz photoconductivity of single-walled carbon nanotube films (2018)

Peter Karlsen, Mikhail V. Shuba, Polina P. Kuzhir, Albert G. Nasibulin, Patrizia Lamberti, and Euan Hendry

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-04

Beschreibung: Author(s): Peter Karlsen, Mikhail V. Shuba, Polina P. Kuzhir, Albert G. Nasibulin, Patrizia Lamberti, and Euan Hendry In recent years, there have been conflicting reports regarding the ultrafast photoconductive response of films of single walled carbon nanotubes (CNTs), which apparently exhibit photoconductivities that can differ even in sign. Here, we observe explicitly that the THz photoconductivity of CNT films ... [Phys. Rev. B 98, 241404(R)] Published Mon Dec 03, 2018

Schlagwort(e): Surface physics, nanoscale physics, low-dimensional systems

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Twisted graphene bilayer around the first magic angle engineered by heterostrain (2018)

Jia-Bin Qiao, Long-Jing Yin, and Lin He

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-04

Beschreibung: Author(s): Jia-Bin Qiao, Long-Jing Yin, and Lin He Very recently, twisted graphene bilayers (TGBs) around the first magic angle θ ≈ 1 . 1 ∘ have attracted much attention for the realization of exotic quantum states, such as correlated insulator behavior and unconventional superconductivity. Here we elaborately study a series of TGBs around the first magi... [Phys. Rev. B 98, 235402] Published Mon Dec 03, 2018

Schlagwort(e): Surface physics, nanoscale physics, low-dimensional systems

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Proximity-induced spin-orbit coupling in graphene/${\mathrm{Bi}}_{1.5}{\mathrm{Sb}}_{0.5}{\mathrm{Te}}_{1.7}{\mathrm{Se}}_{1.3}$ heterostructures (2018)

S. Jafarpisheh, A. W. Cummings, K. Watanabe, T. Taniguchi, B. Beschoten, and C. Stampfer

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-04

Beschreibung: Author(s): S. Jafarpisheh, A. W. Cummings, K. Watanabe, T. Taniguchi, B. Beschoten, and C. Stampfer The weak intrinsic spin-orbit coupling in graphene can be greatly enhanced by proximity coupling. Here, we report on the proximity-induced spin-orbit coupling in graphene transferred by hexagonal boron nitride (hBN) onto the topological insulator Bi 1.5 Sb 0.5 Te 1.7 Se 1.3 (BSTS) which was grown on a hBN ... [Phys. Rev. B 98, 241402(R)] Published Mon Dec 03, 2018

Schlagwort(e): Surface physics, nanoscale physics, low-dimensional systems

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Duality for open fermion systems: Energy-dependent weak coupling and quantum master equations (2018)

J. Schulenborg, J. Splettstoesser, and M. R. Wegewijs

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-05

Beschreibung: Author(s): J. Schulenborg, J. Splettstoesser, and M. R. Wegewijs Open fermion systems with energy-independent bilinear coupling to a fermionic environment have been shown to obey a general duality relation [J. Schulenborg et al. , Phys. Rev. B 93 , 081411 (2016) ] which allows for a drastic simplification of time-evolution calculations. In the weak-coupling limit, ... [Phys. Rev. B 98, 235405] Published Tue Dec 04, 2018

Schlagwort(e): Surface physics, nanoscale physics, low-dimensional systems

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Dihedral-angle-corrected registry-dependent interlayer potential for multilayer graphene structures (2018)

Mingjian Wen, Stephen Carr, Shiang Fang, Efthimios Kaxiras, and Ellad B. Tadmor

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-05

Beschreibung: Author(s): Mingjian Wen, Stephen Carr, Shiang Fang, Efthimios Kaxiras, and Ellad B. Tadmor The structural relaxation of multilayer graphene is essential in describing the interesting electronic properties induced by intentional misalignment of successive layers, including the recently reported superconductivity in twisted bilayer graphene. This is difficult to accomplish without an accura... [Phys. Rev. B 98, 235404] Published Tue Dec 04, 2018

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Cavity optomagnonics with magnetic textures: Coupling a magnetic vortex to light (2018)

Jasmin Graf, Hannes Pfeifer, Florian Marquardt, and Silvia Viola Kusminskiy

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-06

Beschreibung: Author(s): Jasmin Graf, Hannes Pfeifer, Florian Marquardt, and Silvia Viola Kusminskiy A unique feature of cavity optomagnonics is the possibility of coherently coupling light to spin excitations on top of magnetic textures. Here, the authors propose a cavity-optomagnonic system with a nonhomogeneous magnetic ground state, namely, a vortex in a magnetic microdisc. Using both analytical and computational methods, they study the cavity-enhanced coupling between optical whispering gallery modes and magnon modes, localized at the vortex. The results, both in terms of value and tunability of the coupling, point to the promise of engineered optomagnonic systems for quantum information platforms. [Phys. Rev. B 98, 241406(R)] Published Wed Dec 05, 2018

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Enhanced performance of a quantum-dot-based nanomotor due to Coulomb interactions (2018)

María Florencia Ludovico and Massimo Capone

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-06

Beschreibung: Author(s): María Florencia Ludovico and Massimo Capone We study the relation between quantum pumping of charge and the work exchanged with the driving potentials in a strongly interacting ac -driven quantum dot. We work in the large-interaction limit and in the adiabatic pumping regime, and we develop a treatment that combines the time-dependent slave-bo... [Phys. Rev. B 98, 235409] Published Wed Dec 05, 2018

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Realizing an ultra-wideband backward-wave metamaterial waveguide (2018)

S. S. Seetharaman, B. Tremain, W. L. Barnes, and I. R. Hooper

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-06

Beschreibung: Author(s): S. S. Seetharaman, B. Tremain, W. L. Barnes, and I. R. Hooper Electroinductive waves have emerged as an attractive solution for designing metamaterials that support backward propagating waves. Stacked metasurfaces etched with complementary split-ring resonators (CSRRs) have also been shown to exhibit a broadband negative dispersion. We demonstrate, through exp... [Phys. Rev. B 98, 235408] Published Wed Dec 05, 2018

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Droplet formation in a one-dimensional system of attractive spinless fermions (2018)

Vera V. Vyborova, Oleg Lychkovskiy, and Alexey N. Rubtsov

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-06

Beschreibung: Author(s): Vera V. Vyborova, Oleg Lychkovskiy, and Alexey N. Rubtsov A translation invariant one-dimensional system of spinless fermions with a finite-range attraction experiences a quantum phase transition to a phase-separated state. While being a conventional Luttinger liquid for a small interaction strength, spinless fermions form a droplet with the size smaller t... [Phys. Rev. B 98, 235407] Published Wed Dec 05, 2018

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Scaling rules in optomechanical semiconductor micropillars (2018)

S. Anguiano, P. Sesin, A. E. Bruchhausen, F. R. Lamberti, I. Favero, M. Esmann, I. Sagnes, A. Lemaître, N. D. Lanzillotti-Kimura, P. Senellart, and A. Fainstein

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-12-07

Beschreibung: Author(s): S. Anguiano, P. Sesin, A. E. Bruchhausen, F. R. Lamberti, I. Favero, M. Esmann, I. Sagnes, A. Lemaître, N. D. Lanzillotti-Kimura, P. Senellart, and A. Fainstein Semiconductor pillar microcavities have recently emerged as a promising optomechanical platform in the unprecedented 20-GHz frequency range. Currently established models for the mechanical behavior of micropillars, however, rely on complete numerical simulations or semianalytical approaches, which m... [Phys. Rev. A 98, 063810] Published Thu Dec 06, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Relation between width of zero-bias anomaly and Kondo temperature in transport measurements through correlated quantum dots: Effect of asymmetric coupling to the leads (2018)

D. Pérez Daroca, P. Roura-Bas, and A. A. Aligia

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-07

Beschreibung: Author(s): D. Pérez Daroca, P. Roura-Bas, and A. A. Aligia The zero-bias anomaly at low temperatures, originated by the Kondo effect when an electric current flows through a system formed by a spin- 1 / 2 quantum dot and two metallic contacts is theoretically investigated. In particular, we compare the width of this anomaly 2 T NE with that of the Kondo resonanc... [Phys. Rev. B 98, 245406] Published Thu Dec 06, 2018

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Solitary waves in optical fibers governed by higher-order dispersion (2018)

V. I. Kruglov and J. D. Harvey

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-12-08

Beschreibung: Author(s): V. I. Kruglov and J. D. Harvey An exact solitary wave solution is presented for the nonlinear Schrödinger equation governing the propagation of pulses in optical fibers including the effects of second-, third-, and fourth-order dispersions. The stability of this solitonlike solution with a sech 2 shape is proven. The main criteria... [Phys. Rev. A 98, 063811] Published Fri Dec 07, 2018

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Floquet scattering of light and sound in Dirac optomechanics (2018)

C. Wurl and H. Fehske

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-12-08

Beschreibung: Author(s): C. Wurl and H. Fehske The inelastic scattering and conversion process between photons and phonons by laser-driven quantum dots is analyzed for a honeycomb array of optomechanical cells. Using Floquet theory for an effective two-level system, we solve the related time-dependent scattering problem, beyond the standard rota... [Phys. Rev. A 98, 063812] Published Fri Dec 07, 2018

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Negative charge enhancement of near-surface nitrogen vacancy centers by multicolor excitation (2018)

I. Meirzada, Y. Hovav, S. A. Wolf, and N. Bar-Gill

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-12

Beschreibung: Author(s): I. Meirzada, Y. Hovav, S. A. Wolf, and N. Bar-Gill Nitrogen vacancy (NV) centers in diamond have been identified over the past few years as promising systems for a variety of applications, ranging from quantum information science to magnetic sensing. This relies on the unique optical and spin properties of the negatively charged NV. Many of these ap... [Phys. Rev. B 98, 245411] Published Tue Dec 11, 2018

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Standard quantum limit of sensitivity of an optical gyroscope (2018)

Andrey B. Matsko and Sergey P. Vyatchanin

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-12-14

Beschreibung: Author(s): Andrey B. Matsko and Sergey P. Vyatchanin We find that the measurement sensitivity of an optical integrating gyroscope is fundamentally limited due to ponderomotive action of the light leading to the standard quantum limit of the rotation angle detection. The uncorrelated quantum fluctuations of power of clockwise and counterclockwise elect... [Phys. Rev. A 98, 063821] Published Thu Dec 13, 2018

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Temporal interference effects in noncollinear and frequency-nondegenerate spontaneous parametric down-conversion (2018)

M. V. Fedorov, A. A. Sysoeva, S. V. Vintskevich, and D. A. Grigoriev

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-07-31

Beschreibung: Author(s): M. V. Fedorov, A. A. Sysoeva, S. V. Vintskevich, and D. A. Grigoriev We consider regimes of spontaneous parametric down-conversion, both noncollinear and nondegenerate in frequencies. Parameters characterizing degrees of noncollinearity and of nondegeneracy are defined, and they are shown to be not independent of each other. At a given degree of nondegeneracy the emi... [Phys. Rev. A 98, 013850] Published Mon Jul 30, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Enhancement of second-harmonic generation based on the cascaded second- and third-order nonlinear processes in a multimode optical microcavity (2018)

Ming Li, Chang-Ling Zou, Chun-Hua Dong, Xi-Feng Ren, and Dao-Xin Dai

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-07-31

Beschreibung: Author(s): Ming Li, Chang-Ling Zou, Chun-Hua Dong, Xi-Feng Ren, and Dao-Xin Dai Optical microcavities are often used to realize enhanced nonlinear optical interactions for highly efficient second-harmonic generation. With increased pump power, the efficiency of nonlinear frequency conversion can be increased further, whereas some other unwanted nonlinear effects will also emerg... [Phys. Rev. A 98, 013854] Published Mon Jul 30, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Effect of wire length on quantum coherence in InGaAs wires (2018)

Yuantao Xie and J. J. Heremans

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-25

Beschreibung: Author(s): Yuantao Xie and J. J. Heremans Quantum phase coherence lengths were experimentally measured in nanolithographic wires to investigate the effects of wire length on quantum decoherence, which can be limited by mechanisms such as coupling to an external classical environment. The work demonstrates that device geometry and coupling t... [Phys. Rev. B 98, 035429] Published Tue Jul 24, 2018

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Efficient orbital angular momentum transfer between plasmons and free electrons (2018)

Wei Cai, Ori Reinhardt, Ido Kaminer, and F. Javier García de Abajo

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-07-25

Beschreibung: Author(s): Wei Cai, Ori Reinhardt, Ido Kaminer, and F. Javier García de Abajo Free electrons can efficiently absorb or emit plasmons excited in a thin conductor, giving rise to multiple energy peaks in the transmitted electron spectra separated by multiples of the plasmon energy. When the plasmons are chiral, this can also give rise to transfer of orbital angular momentum (OA... [Phys. Rev. B 98, 045424] Published Tue Jul 24, 2018

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Long-lived quantum coherences in a $\mathsf{V}$-type system strongly driven by a thermal environment (2018)

Suyesh Koyu and Timur V. Tscherbul

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-08-08

Beschreibung: Author(s): Suyesh Koyu and Timur V. Tscherbul We explore the coherent dynamics of a three-level V -type system interacting with a thermal bath in the regime where thermal excitation occurs much faster than spontaneous decay. We present analytic solutions of the Bloch-Redfield quantum master equations, which show that strong incoherent pumping ca... [Phys. Rev. A 98, 023811] Published Tue Aug 07, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Spatiotemporal supermodes: Rapid reduction of spatial coherence in highly multimode lasers (2018)

Ronen Chriki, Simon Mahler, Chene Tradonsky, Vishwa Pal, Asher A. Friesem, and Nir Davidson

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-08-08

Beschreibung: Author(s): Ronen Chriki, Simon Mahler, Chene Tradonsky, Vishwa Pal, Asher A. Friesem, and Nir Davidson Spatial coherence quantifies spatial field correlations and is one of the fundamental properties of light. Here we investigate the spatial coherence of highly multimode lasers in the regime of short timescales. Counterintuitively, we show that in this regime, the temporal (longitudinal) modes play a... [Phys. Rev. A 98, 023812] Published Tue Aug 07, 2018

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Accelerated optical solitons in reorientational media with transverse invariance and longitudinally modulated birefringence (2018)

Urszula A. Laudyn, Michał Kwaśny, Mirosław A. Karpierz, Noel F. Smyth, and Gaetano Assanto

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-08-08

Beschreibung: Author(s): Urszula A. Laudyn, Michał Kwaśny, Mirosław A. Karpierz, Noel F. Smyth, and Gaetano Assanto We demonstrate that reorientational spatial solitons can curve when propagating in a medium with engineered walk-off along the direction of propagation. In this regard, we employ nematic liquid crystals with molecular anchoring defined by electron-beam lithography and optic axis distribution modulat... [Phys. Rev. A 98, 023810] Published Tue Aug 07, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Spin- and valley-dependent negative magnetoresistance in a ferromagnetic ${\mathrm{MoS}}_{2}$ junction with a quantum well (2018)

Wei-Tao Lu, Hong-Yu Tian, Hong-Mei Liu, Yun-Fang Li, and Wen Li

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-07

Beschreibung: Author(s): Wei-Tao Lu, Hong-Yu Tian, Hong-Mei Liu, Yun-Fang Li, and Wen Li We studied the spin and valley transports and magnetoresistance effect in a MoS 2 junction with a quantum well inserted between the gate voltage and the ferromagnetic MoS 2 , which can apply generally to other transition metal dichalcogenides with the same crystal structure. In the absence of a quantum... [Phys. Rev. B 98, 075405] Published Mon Aug 06, 2018

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Strain-engineered Majorana zero energy modes and ${φ}_{0}$ Josephson state in black phosphorus (2018)

Mohammad Alidoust, Morten Willatzen, and Antti-Pekka Jauho

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-08

Beschreibung: Author(s): Mohammad Alidoust, Morten Willatzen, and Antti-Pekka Jauho We develop a theory for strain control of Majorana zero energy modes and the Josephson effect in black phosphorus (BP) devices proximity coupled to a superconductor. Employing realistic values for the band parameters subject to strain, we show that the strain closes the intrinsic band gap of BP; how... [Phys. Rev. B 98, 085414] Published Tue Aug 07, 2018

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Sliding of an electron crystal of finite size on the surface of superfluid $^{4}\mathrm{He}$ confined in a microchannel (2018)

J.-Y. Lin, A. V. Smorodin, A. O. Badrutdinov, and D. Konstantinov

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-08

Beschreibung: Author(s): J.-Y. Lin, A. V. Smorodin, A. O. Badrutdinov, and D. Konstantinov We present a new study of the nonlinear transport of a two-dimensional electron crystal on the surface of liquid helium confined in a 10 − μ m -wide channel in which the effective length of the crystal can be varied from 10 to 215 μ m . At low driving voltages, the moving electron crystal is strongly coupl... [Phys. Rev. B 98, 085412] Published Tue Aug 07, 2018

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Dependence of the adsorption height of graphenelike adsorbates on their dimensionality (2018)

S. Weiß, D. Gerbert, A. Stein, A. K. Schenk, X. Yang, C. Brülke, R. Kremring, S. Feldmann, F. C. Bocquet, M. Gille, S. Hecht, M. Sokolowski, P. Tegeder, S. Soubatch, and F. S. Tautz

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-11

Beschreibung: Author(s): S. Weiß, D. Gerbert, A. Stein, A. K. Schenk, X. Yang, C. Brülke, R. Kremring, S. Feldmann, F. C. Bocquet, M. Gille, S. Hecht, M. Sokolowski, P. Tegeder, S. Soubatch, and F. S. Tautz Comparing the adsorption heights of various graphene nanoribbons on Cu(111) and Au(111) surfaces to those of graphene and π -conjugated planar organic molecules, we observe that two-dimensional graphene adsorbs much further away from the surface than both one-dimensional graphene nanoribbons and π -co... [Phys. Rev. B 98, 075410] Published Fri Aug 10, 2018

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Exploring six modes of an optical parametric oscillator (2018)

Luis F. Muñoz-Martínez, Felippe Alexandre Silva Barbosa, Antônio Sales Coelho, Luis Ortiz-Gutiérrez, Marcelo Martinelli, Paulo Nussenzveig, and Alessandro S. Villar

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-08-14

Beschreibung: Author(s): Luis F. Muñoz-Martínez, Felippe Alexandre Silva Barbosa, Antônio Sales Coelho, Luis Ortiz-Gutiérrez, Marcelo Martinelli, Paulo Nussenzveig, and Alessandro S. Villar Researchers have entangled six modes of a laser cavity—a record number for such a device. [Phys. Rev. A 98, 023823] Published Mon Aug 13, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Bound states in the continuum in whispering gallery resonators (2018)

M. Ahumada, P. A. Orellana, and J. C. Retamal

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-08-14

Beschreibung: Author(s): M. Ahumada, P. A. Orellana, and J. C. Retamal We report the formation of bound states in the continuum in a whispering gallery resonator coupled to a one-dimensional waveguide. We find that an incident photon wave packet is partially stored in the bound state in the continuum due to a roughness-induced symmetry breaking. We discuss quantum inte... [Phys. Rev. A 98, 023827] Published Mon Aug 13, 2018

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Thermoelectric properties of a quantum dot coupled to magnetic leads by Rashba spin-orbit interaction (2018)

Łukasz Karwacki and Józef Barnaś

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-14

Beschreibung: Author(s): Łukasz Karwacki and Józef Barnaś We consider a single-level quantum dot coupled to two leads which are ferromagnetic in general. Apart from tunneling processes conserving electron spin, we also include processes associated with spin flip of tunneling electrons, which appear due to Rashba spin-orbit coupling. Charge and heat current... [Phys. Rev. B 98, 075413] Published Mon Aug 13, 2018

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Temperature- and frequency-dependent optical and transport conductivities in doped buckled honeycomb lattices (2018)

Andrii Iurov, Godfrey Gumbs, and Danhong Huang

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-14

Beschreibung: Author(s): Andrii Iurov, Godfrey Gumbs, and Danhong Huang Thermal and dynamical properties of optical and transport conductivities in doped buckled honeycomb lattices are studied for various doping densities and band gaps. At finite temperatures, a thermally convoluted polarization function is calculated by employing analytically derived temperature-depend... [Phys. Rev. B 98, 075414] Published Mon Aug 13, 2018

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Flux-driven and geometry-controlled spin filtering for arbitrary spins in aperiodic quantum networks (2018)

Amrita Mukherjee, Arunava Chakrabarti, and Rudolf A. Römer

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-14

Beschreibung: Author(s): Amrita Mukherjee, Arunava Chakrabarti, and Rudolf A. Römer We demonstrate that an aperiodic array of certain quantum networks comprising magnetic and nonmagnetic atoms can act as perfect spin filters for particles with arbitrary spin state. This can be achieved by introducing minimal quasi-one dimensionality in the basic structural units building up the arr... [Phys. Rev. B 98, 075415] Published Mon Aug 13, 2018

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Slowing 80-ns light pulses by four-wave mixing in potassium vapor (2018)

D. Arsenović, M. M. Ćurčić, T. Khalifa, B. Zlatković, Ž. Nikitović, I. S. Radojičić, A. J. Krmpot, and B. M. Jelenković

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-08-15

Beschreibung: Author(s): D. Arsenović, M. M. Ćurčić, T. Khalifa, B. Zlatković, Ž. Nikitović, I. S. Radojičić, A. J. Krmpot, and B. M. Jelenković We experimentally and theoretically study propagation of 80-ns Gaussian-like probe pulses in hot potassium vapor under conditions of four-wave mixing (FWM). The atomic scheme for FWM is off-resonant, double- Λ atomic scheme, with pump and probe photons, mediated in the K vapor, generating new probe a... [Phys. Rev. A 98, 023829] Published Tue Aug 14, 2018

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From topologically protected coherent perfect reflection to bound states in the continuum (2018)

Shiwei Dai, Liang Liu, Dezhuan Han, and Jian Zi

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-15

Beschreibung: Author(s): Shiwei Dai, Liang Liu, Dezhuan Han, and Jian Zi A mechanism for perfect reflection is proposed for the dielectric medium beyond the total internal reflection and band gaps. It arises from the coherence of multiple propagating modes, and can be determined by the topological vortex of a transmission coefficient with a nonzero winding number in para... [Phys. Rev. B 98, 081405(R)] Published Tue Aug 14, 2018

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Two-dimensional ferroelastic topological insulators in single-layer Janus transition metal dichalcogenides $M\mathrm{SSe}(M=\mathrm{Mo},\mathrm{W})$ (2018)

Yandong Ma, Liangzhi Kou, Baibiao Huang, Ying Dai, and Thomas Heine

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-15

Beschreibung: Author(s): Yandong Ma, Liangzhi Kou, Baibiao Huang, Ying Dai, and Thomas Heine Two-dimensional topological insulators and two-dimensional materials with ferroelastic characteristics are intriguing materials and many examples have been reported both experimentally and theoretically. Here, we present the combination of both features—a two-dimensional ferroelastic topological ins... [Phys. Rev. B 98, 085420] Published Tue Aug 14, 2018

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Field-effect-driven half-metallic multilayer graphene (2018)

Jacopo Baima, Francesco Mauri, and Matteo Calandra

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-16

Beschreibung: Author(s): Jacopo Baima, Francesco Mauri, and Matteo Calandra Rhombohedral stacked multilayer graphene displays the occurrence of a magnetic surface state at low temperatures. Recent angular resolved photoemission experiments demonstrate the robustness of the magnetic state in long sequences of ABC graphene. Here, by using first-principles calculations, we sho... [Phys. Rev. B 98, 075418] Published Wed Aug 15, 2018

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Barium titanate nanoparticles: Short-range lattice distortions with long-range cubic order (2018)

Chenyang Shi, Simon J. L. Billinge, Eric Puma, Sun Hwi Bang, Nathaniel J. H. Bean, Jean-Claude de Sugny, Robert G. Gambee, Richard C. Haskell, Adrian Hightower, and Todd C. Monson

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-16

Beschreibung: Author(s): Chenyang Shi, Simon J. L. Billinge, Eric Puma, Sun Hwi Bang, Nathaniel J. H. Bean, Jean-Claude de Sugny, Robert G. Gambee, Richard C. Haskell, Adrian Hightower, and Todd C. Monson Barium titanate (BTO) nanoparticles (sizes 10–500 nm) exhibit a displacement of the Ti atom from the center of the perovskite unit cell as inferred from synchrotron x-ray diffraction patterns (XRD) analyzed using atomic pair distribution functions (PDFs). Fits to PDFs acquired at temperatures of 20 ... [Phys. Rev. B 98, 085421] Published Wed Aug 15, 2018

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Quantum transport through three-dimensional topological insulator p-n junction under magnetic field (2018)

Ning Dai, Yan-Feng Zhou, Peng Lv, and Qing-Feng Sun

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-16

Beschreibung: Author(s): Ning Dai, Yan-Feng Zhou, Peng Lv, and Qing-Feng Sun The three-dimensional (3D) topological insulator (TI) p-n junction under magnetic fields presents an interesting transport property which is investigated both theoretically and numerically in this paper. Transport in this device can be tuned by the axial magnetic field. Specifically, the scattering ... [Phys. Rev. B 98, 085422] Published Wed Aug 15, 2018

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Radii of Rydberg states of isolated silicon donors (2018)

Juerong Li, Nguyen H. Le, K. L. Litvinenko, S. K. Clowes, H. Engelkamp, S. G. Pavlov, H.-W. Hübers, V. B. Shuman, L. М. Portsel, А. N. Lodygin, Yu. A. Astrov, N. V. Abrosimov, C. R. Pidgeon, A. Fisher, Zaiping Zeng, Y.-M. Niquet, and B. N. Murdin

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-16

Beschreibung: Author(s): Juerong Li, Nguyen H. Le, K. L. Litvinenko, S. K. Clowes, H. Engelkamp, S. G. Pavlov, H.-W. Hübers, V. B. Shuman, L. М. Portsel, А. N. Lodygin, Yu. A. Astrov, N. V. Abrosimov, C. R. Pidgeon, A. Fisher, Zaiping Zeng, Y.-M. Niquet, and B. N. Murdin We have performed high field magnetoabsorption spectroscopy on silicon doped with a variety of single and double donor species. The magnetic field provides access to an experimental magnetic length, and the quadratic Zeeman effect, in particular, may be used to extract the wave-function radius witho... [Phys. Rev. B 98, 085423] Published Wed Aug 15, 2018

Schlagwort(e): Surface physics, nanoscale physics, low-dimensional systems

Print ISSN: 1098-0121

Digitale ISSN: 1095-3795

Thema: Physik

Publiziert von American Physical Society (APS)

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Electron spin inversion in gated silicene nanoribbons (2018)

Bartłomiej Rzeszotarski and Bartłomiej Szafran

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-16

Beschreibung: Author(s): Bartłomiej Rzeszotarski and Bartłomiej Szafran We study locally gated silicene nanoribbons as spin active devices and we solve the quantum scattering problem in the atomistic tight-binding formalism. Particular attention is paid to the low energy range for which only four subbands appear at the Fermi level. We find that the gated segments of zig... [Phys. Rev. B 98, 075417] Published Wed Aug 15, 2018

Schlagwort(e): Surface physics, nanoscale physics, low-dimensional systems

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Thema: Physik

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Femtosecond valley polarization and topological resonances in transition metal dichalcogenides (2018)

S. Azar Oliaei Motlagh, Jhih-Sheng Wu, Vadym Apalkov, and Mark I. Stockman

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-16

Beschreibung: Author(s): S. Azar Oliaei Motlagh, Jhih-Sheng Wu, Vadym Apalkov, and Mark I. Stockman We theoretically introduce the fundamentally fastest induction of a significant population and valley polarization in a monolayer of a transition metal dichalcogenide (i.e., MoS 2 and WS 2 ). This may be extended to other two-dimensional materials with the same symmetry. This valley polarization can be... [Phys. Rev. B 98, 081406(R)] Published Wed Aug 15, 2018

Schlagwort(e): Surface physics, nanoscale physics, low-dimensional systems

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Thema: Physik

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Single microwave photon switch controlled by an external electrostatic field (2018)

Qian Jiang, Qingmei Hu, Bingsuo Zou, and Yongyou Zhang

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-08-16

Beschreibung: Author(s): Qian Jiang, Qingmei Hu, Bingsuo Zou, and Yongyou Zhang We design a single microwave photon switch through a one-dimensional waveguide coupled with a side Jaynes-Cummings system, namely, a single-mode cavity with an embedded Rydberg atom Rb 87 . Since the energy spectra of the Rb 87 atom depend on the electrostatic field, the Rb 87 atom can couple with the c... [Phys. Rev. A 98, 023830] Published Wed Aug 15, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

Publiziert von American Physical Society (APS)

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Fundamental noise dynamics in cascaded-order Brillouin lasers (2018)

Ryan O. Behunin, Nils T. Otterstrom, Peter T. Rakich, Sarat Gundavarapu, and Daniel J. Blumenthal

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-08-18

Beschreibung: Author(s): Ryan O. Behunin, Nils T. Otterstrom, Peter T. Rakich, Sarat Gundavarapu, and Daniel J. Blumenthal The dynamics of cascaded-order Brillouin lasers make them ideal for applications such as rotation sensing, highly coherent optical communications, and low-noise microwave signal synthesis. Remarkably, when implemented at the chip scale, recent experimental studies have revealed that Brillouin lasers... [Phys. Rev. A 98, 023832] Published Fri Aug 17, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Digitale ISSN: 1094-1622

Thema: Physik

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Inverse Cherenkov effect and control of optical solitons by resonant dispersive waves (2018)

A. V. Yulin

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-08-18

Beschreibung: Author(s): A. V. Yulin The interactions of optical solitons with dispersive waves of low intensity in optical fibers with high-order dispersion are considered numerically and analytically. It is shown that Cherenkov phase matching between the solitons and the dispersive waves makes it possible to achieve an efficient inte... [Phys. Rev. A 98, 023833] Published Fri Aug 17, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

Print ISSN: 1050-2947

Digitale ISSN: 1094-1622

Thema: Physik

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Impact of complex adatom-induced interactions on quantum spin Hall phases (2018)

Flaviano José dos Santos, Dario A. Bahamon, Roberto B. Muniz, Keith McKenna, Eduardo V. Castro, Johannes Lischner, and Aires Ferreira

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-08-18

Beschreibung: Author(s): Flaviano José dos Santos, Dario A. Bahamon, Roberto B. Muniz, Keith McKenna, Eduardo V. Castro, Johannes Lischner, and Aires Ferreira Adsorbate engineering offers a seemingly simple approach to tailor spin-orbit interactions in atomically thin materials and thus to unlock the much sought-after topological insulating phases in two dimensions. However, the observation of an Anderson topological transition induced by heavy adatoms ha... [Phys. Rev. B 98, 081407(R)] Published Fri Aug 17, 2018

Schlagwort(e): Surface physics, nanoscale physics, low-dimensional systems

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Thema: Physik

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Entanglement swapping for generation of heralded time-frequency-entangled photon pairs (2018)

Dashiell L. P. Vitullo, M. G. Raymer, B. J. Smith, Michał Karpiński, L. Mejling, and K. Rottwitt

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2018-08-21

Beschreibung: Author(s): Dashiell L. P. Vitullo, M. G. Raymer, B. J. Smith, Michał Karpiński, L. Mejling, and K. Rottwitt Photonic time-frequency entanglement is a promising resource for quantum information processing technologies. We investigate swapping of continuous-variable entanglement in the time-frequency degree of freedom using three-wave mixing in the low-gain regime with the aim of producing heralded biphoton... [Phys. Rev. A 98, 023836] Published Mon Aug 20, 2018

Schlagwort(e): Quantum optics, physics of lasers, nonlinear optics, classical optics

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Digitale ISSN: 1094-1622

Thema: Physik

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