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Polarization singularities in a sum-frequency light beam generated by a bichromatic singular beam in the bulk of an isotropic nonlinear chiral medium (2015)

K. S. Grigoriev, V. A. Makarov, and I. A. Perezhogin

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): K. S. Grigoriev, V. A. Makarov, and I. A. Perezhogin Expressions for the electric field at a sum frequency generated by a collinear elliptically polarized Gaussian beam and circularly polarized Laguerre-Gaussian beam in an isotropic chiral nonlinear medium are obtained in quadratures. The amount and locations of C points in the cross section of a sign… [Phys. Rev. A 92, 023814] Published Mon Aug 10, 2015

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

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Thema: Physik

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Dynamical many-body phases of the parametrically driven, dissipative Dicke model (2015)

R. Chitra and O. Zilberberg

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): R. Chitra and O. Zilberberg Control and manipulation of quantum engineered systems allows for the utilization of time-dependent parametric modulations for accessing novel out-of-equilibrium phenomena. In the absence of such driving, the dissipative Dicke model exhibits a fascinating out-of-equilibrium many-body phase transitio… [Phys. Rev. A 92, 023815] Published Mon Aug 10, 2015

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

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Light trapping above the light cone in a one-dimensional array of dielectric spheres (2015)

Evgeny N. Bulgakov and Almas F. Sadreev

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Evgeny N. Bulgakov and Almas F. Sadreev We demonstrate bound states in the first TE and TM diffraction continua (BSC) in a linear periodic array of dielectric spheres in air above the light cone. We classify the BSCs according to the symmetry specified by the azimuthal number m , the Bloch wave vector β directed along the array, and polari… [Phys. Rev. A 92, 023816] Published Mon Aug 10, 2015

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

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Optical theorem for the conservation of electromagnetic helicity: Significance for molecular energy transfer and enantiomeric discrimination by circular dichroism (2015)

Manuel Nieto-Vesperinas

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Manuel Nieto-Vesperinas We put forward the physical meaning of the conservation equation for the helicity on scattering of an electromagnetic field with a generally magnetodielectric bi-isotropic dipolar object. This is the optical theorem for the helicity that, as we find, plays a role for this quantity analogous to that … [Phys. Rev. A 92, 023813] Published Mon Aug 10, 2015

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

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Architecture dependence of photon antibunching in cavity quantum electrodynamics (2015)

Matthew Bradford and Jung-Tsung Shen

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Matthew Bradford and Jung-Tsung Shen We investigate numerically the architecture dependence of the characteristics of antibunched photons generated in cavity quantum electrodynamic systems. We show that the quality of antibunching [the smallness of the second-order intensity correlation function at zero time g ( 2 ) ( 0 ) ] and the generation… [Phys. Rev. A 92, 023810] Published Mon Aug 10, 2015

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

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Broadband biphotons in a single spatial mode (2015)

K. G. Katamadze, N. A. Borshchevskaya, I. V. Dyakonov, A. V. Paterova, and S. P. Kulik

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): K. G. Katamadze, N. A. Borshchevskaya, I. V. Dyakonov, A. V. Paterova, and S. P. Kulik We demonstrate the experimental technique for generating a spatial single-mode broadband biphoton field. The method is based on a dispersive optical element which precisely tailors the structure of the type-I spontaneous parametric down-conversion (SPDC) frequency angular spectrum in order to shift … [Phys. Rev. A 92, 023812] Published Mon Aug 10, 2015

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

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Mechanical cooling in single-photon optomechanics with quadratic nonlinearity (2015)

Wen-ju Gu, Zhen Yi, Li-hui Sun, and Da-hai Xu

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Wen-ju Gu, Zhen Yi, Li-hui Sun, and Da-hai Xu In the paper we study the nonlinear mechanical cooling processes in an intrinsic quadratically optomechanical coupling system without linearizing the optomechanical interaction. We apply scattering theory to calculate the transition rates between different mechanical Fock states using the resolvent … [Phys. Rev. A 92, 023811] Published Mon Aug 10, 2015

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

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Dynamical quantum phase transitions in the Kitaev honeycomb model (2015)

Markus Schmitt and Stefan Kehrein

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Markus Schmitt and Stefan Kehrein The notion of a dynamical quantum phase transition (DQPT) was recently introduced [Heyl et al. , Phys. Rev. Lett. 110 , 135704 (2013) ] as the nonanalytic behavior of the Loschmidt echo at critical times in the thermodynamic limit. In this work the quench dynamics in the ground state sector of the two… [Phys. Rev. B 92, 075114] Published Mon Aug 10, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Creating and manipulating non-Abelian anyons in cold atom systems using auxiliary bosons (2015)

Yuhe Zhang, G. J. Sreejith, and J. K. Jain

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Yuhe Zhang, G. J. Sreejith, and J. K. Jain The possibility of realizing bosonic fractional quantum Hall effect in ultracold atomic systems suggests a new route to producing and manipulating anyons, by introducing auxiliary bosons of a different species that capture quasiholes and thus inherit their nontrivial braiding properties. States with… [Phys. Rev. B 92, 075116] Published Mon Aug 10, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Origin of strong dispersion in Hubbard insulators (2015)

Y. Wang, K. Wohlfeld, B. Moritz, C. J. Jia, M. van Veenendaal, K. Wu, C.-C. Chen, and T. P. Devereaux

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Y. Wang, K. Wohlfeld, B. Moritz, C. J. Jia, M. van Veenendaal, K. Wu, C.-C. Chen, and T. P. Devereaux Using cluster perturbation theory, we explain the origin of the strongly dispersive feature found at high binding energy in the spectral function of the Hubbard model. By comparing the Hubbard and t − J − 3 s model spectra, we show that this dispersion does not originate from either coupling to spin fluc… [Phys. Rev. B 92, 075119] Published Mon Aug 10, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Logarithmic temperature dependence of samarium ion valence in the heavy-fermion Sm_{x} La_{1−x} Os_{4} Sb_{12} (2015)

Kengo Fushiya, Ryoichi Miyazaki, Ryuji Higashinaka, Akira Yamada, Masaichiro Mizumaki, Satoshi Tsutsui, Kiyofumi Nitta, Tomoya Uruga, Bunya Suemitsu, Hideyuki Sato, and Yuji Aoki

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Kengo Fushiya, Ryoichi Miyazaki, Ryuji Higashinaka, Akira Yamada, Masaichiro Mizumaki, Satoshi Tsutsui, Kiyofumi Nitta, Tomoya Uruga, Bunya Suemitsu, Hideyuki Sato, and Yuji Aoki We have measured x-ray absorption spectra at the Sm L 3 edge to investigate the Sm-ion valence of ( S m x L a 1 − x ) O s 4 S b 12 , in which field-insensitive heavy-fermion behavior appears at low temperatures for x = 1 . It has been found that the Sm-ion valance shifts to 2 + with La ion substitution; from v = + 2.78 ( x = 1 ) … [Phys. Rev. B 92, 075118] Published Mon Aug 10, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Lifshitz transition and Van Hove singularity in a three-dimensional topological Dirac semimetal (2015)

Su-Yang Xu, Chang Liu, I. Belopolski, S. K. Kushwaha, R. Sankar, J. W. Krizan, T.-R. Chang, C. M. Polley, J. Adell, T. Balasubramanian, K. Miyamoto, N. Alidoust, Guang Bian, M. Neupane, H.-T. Jeng, C.-Y. Huang, W.-F. Tsai, T. Okuda, A. Bansil, F. C. Chou, R. J. Cava, H. Lin, and M. Z. Hasan

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Su-Yang Xu, Chang Liu, I. Belopolski, S. K. Kushwaha, R. Sankar, J. W. Krizan, T.-R. Chang, C. M. Polley, J. Adell, T. Balasubramanian, K. Miyamoto, N. Alidoust, Guang Bian, M. Neupane, H.-T. Jeng, C.-Y. Huang, W.-F. Tsai, T. Okuda, A. Bansil, F. C. Chou, R. J. Cava, H. Lin, and M. Z. Hasan A three-dimensional (3D) Dirac semimetal is a novel state of quantum matter which has recently attracted much attention as an apparent 3D version of graphene. In this paper, we report results on the electronic structure of the 3D Dirac semimetal Na 3 Bi at a surface that reveals its nontrivial ground … [Phys. Rev. B 92, 075115] Published Mon Aug 10, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Fermi-liquid theory for the single-impurity Anderson model (2015)

Christophe Mora, Cătălin Paşcu Moca, Jan von Delft, and Gergely Zaránd

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Christophe Mora, Cătălin Paşcu Moca, Jan von Delft, and Gergely Zaránd We generalize Nozières' Fermi-liquid theory for the low-energy behavior of the Kondo model to that of the single-impurity Anderson model. In addition to the electrons' phase shift at the Fermi energy, the low-energy Fermi-liquid theory is characterized by four Fermi-liquid parameters: the two given … [Phys. Rev. B 92, 075120] Published Mon Aug 10, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Resolving CuO chain and CuO_{2} plane contributions to the YBa_{2} Cu_{3} O_{7−δ} valence band by standing-wave excited hard x-ray photoelectron spectroscopy (2015)

S. Thiess, T.-L. Lee, C. Aruta, C. T. Lin, F. Venturini, N. B. Brookes, B. C. C. Cowie, and J. Zegenhagen

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): S. Thiess, T.-L. Lee, C. Aruta, C. T. Lin, F. Venturini, N. B. Brookes, B. C. C. Cowie, and J. Zegenhagen We analyzed the valence band (VB) of the 90 K high-temperature superconductor YBa 2 Cu 3 O 7 − δ by photoelectron spectroscopy under standing-wave excitation employing hard x rays. Precisely positioning the standing-wave intensity in the unit cell allows selectively probing the VB yield from the CuO chains… [Phys. Rev. B 92, 075117] Published Mon Aug 10, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Resonant inelastic x-ray scattering on single magnons at oxygen K edges (2015)

Beom Hyun Kim and Jeroen van den Brink

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Beom Hyun Kim and Jeroen van den Brink The recent discovery that resonant inelastic x-ray scattering can probe single-magnon (SM) dispersions in transition metal (TM) oxides when the x-ray energy is tuned to the TM L edge has put this technique on a par with inelastic neutron scattering. It is generally presumed that selection rules forb… [Phys. Rev. B 92, 081105(R)] Published Mon Aug 10, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Ultralong-range order in the Fermi-Hubbard model with long-range interactions (2015)

Erik G. C. P. van Loon, Mikhail I. Katsnelson, and Mikhail Lemeshko

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Erik G. C. P. van Loon, Mikhail I. Katsnelson, and Mikhail Lemeshko We use the dual boson approach to reveal the phase diagram of the Fermi-Hubbard model with long-range dipole-dipole interactions. By using a large-scale finite-temperature calculation on a 64 × 64 square lattice we demonstrate the existence of a novel phase, possessing an “ultralong-range” order. The … [Phys. Rev. B 92, 081106(R)] Published Mon Aug 10, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Quantized topological magnetoelectric effect of the zero-plateau quantum anomalous Hall state (2015)

Jing Wang, Biao Lian, Xiao-Liang Qi, and Shou-Cheng Zhang

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Jing Wang, Biao Lian, Xiao-Liang Qi, and Shou-Cheng Zhang Motivated by the possibility of experimental detection of the topological magnetoelectric effect the authors put forth a theoretical proposal for its realization in the zero plateau quantum anomalous Hall state of a ferromagnet-topological insulator heterostructure. [Phys. Rev. B 92, 081107(R)] Published Mon Aug 10, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Characterization of topological phase transitions via topological properties of transition points (2015)

Linhu Li and Shu Chen

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Linhu Li and Shu Chen We study topological properties of phase transition points of topological quantum phase transitions by assigning a topological invariant defined on a closed circle or surface surrounding the phase transition point in the parameter space of momentum and transition driving parameter. By applying our s… [Phys. Rev. B 92, 085118] Published Mon Aug 10, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Electromagnetically-induced-transparency-related phenomena and their mechanical analogs (2015)

J. A. Souza, L. Cabral, R. R. Oliveira, and C. J. Villas-Boas

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-12

Beschreibung: Author(s): J. A. Souza, L. Cabral, R. R. Oliveira, and C. J. Villas-Boas Systems of interacting classical harmonic oscillators have received considerable attention in the past years as analog models for describing electromagnetically induced transparency (EIT) and associated phenomena. We review these models and investigate their validity for a variety of physical system… [Phys. Rev. A 92, 023818] Published Tue Aug 11, 2015

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

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Kondo physics in a Ni impurity embedded in O-doped Au chains (2015)

S. Di Napoli, M. A. Barral, P. Roura-Bas, L. O. Manuel, A. M. Llois, and A. A. Aligia

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-13

Beschreibung: Author(s): S. Di Napoli, M. A. Barral, P. Roura-Bas, L. O. Manuel, A. M. Llois, and A. A. Aligia By means of ab initio calculations we study the effect of O doping of Au chains containing a nanocontact represented by a Ni atom as a magnetic impurity. In contrast to pure Au chains, we find that with a minimum O doping the 5 d x z , y z states of Au are pushed up, crossing the Fermi level. We also find… [Phys. Rev. B 92, 085120] Published Wed Aug 12, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Chiral triplet superconductivity on the graphene lattice (2015)

J. P. L. Faye, P. Sahebsara, and D. Sénéchal

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-13

Beschreibung: Author(s): J. P. L. Faye, P. Sahebsara, and D. Sénéchal Motivated by the possibility of superconductivity in doped graphene sheets, we investigate superconducting order in the extended Hubbard model on the two-dimensional graphene lattice using the variational cluster approximation (VCA) and the cellular dynamical mean-field theory (CDMFT) with an exact … [Phys. Rev. B 92, 085121] Published Wed Aug 12, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Infinite matrix product states, boundary conformal field theory, and the open Haldane-Shastry model (2015)

Hong-Hao Tu and Germán Sierra

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-07-30

Beschreibung: Author(s): Hong-Hao Tu and Germán Sierra We show that infinite matrix product states (MPSs) constructed from conformal field theories can describe ground states of one-dimensional critical systems with open boundary conditions. To illustrate this, we consider a simple infinite MPS for a spin-1/2 chain and derive an inhomogeneous open Halda… [Phys. Rev. B 92, 041119(R)] Published Wed Jul 29, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Topological states in a microscopic model of interacting fermions (2015)

Nicolai Lang and Hans Peter Büchler

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-07-30

Beschreibung: Author(s): Nicolai Lang and Hans Peter Büchler Motivated by the question of topological classification in interacting models the authors study an exactly solvable two-leg ladder model of spinless fermions with attractive interactions and find its ground states and correlation functions. They also demonstrate the appearance of topologically protected edge states and derive their braiding properties on a microscopic level. [Phys. Rev. B 92, 041118(R)] Published Wed Jul 29, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Covalency in oxidized uranium (2015)

J. G. Tobin, S.-W. Yu, R. Qiao, W. L. Yang, C. H. Booth, D. K. Shuh, A. M. Duffin, D. Sokaras, D. Nordlund, and T.-C. Weng

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-07-30

Beschreibung: Author(s): J. G. Tobin, S.-W. Yu, R. Qiao, W. L. Yang, C. H. Booth, D. K. Shuh, A. M. Duffin, D. Sokaras, D. Nordlund, and T.-C. Weng Using x-ray emission spectroscopy and absorption spectroscopy, it has been possible to directly access the states in the unoccupied conduction bands that are involved with 5 f and 6 d covalency in oxidized uranium. By varying the oxidizing agent, the degree of 5 f covalency can be manipulated and monit… [Phys. Rev. B 92, 045130] Published Wed Jul 29, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Stretched cavity soliton in dispersion-managed Kerr resonators (2015)

Chengying Bao and Changxi Yang

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-04

Beschreibung: Author(s): Chengying Bao and Changxi Yang Stretched cavity soliton (SCS) in dispersion-managed nonlinear resonators is numerically investigated. SCS is found to stretch and compress twice during a round-trip propagation inside the dispersion-managed resonator, exhibiting a pulse dynamics similar to dispersion-managed mode-locked femtosecond… [Phys. Rev. A 92, 023802] Published Mon Aug 03, 2015

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

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Dynamics of optical pulses in highly noninstantaneous Kerr media (2015)

Weiyi Hong (洪伟毅), Qi Guo (郭旗), and Lu Li (李禄)

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-04

Beschreibung: Author(s): Weiyi Hong (洪伟毅), Qi Guo (郭旗), and Lu Li (李禄) The dynamics of optical pulses in noninstantaneous Kerr media are considered. It is found that the “mass center” of the localized profile exhibits an accelerated transversal (on the time axis) motion during propagation. In the highly noninstantaneous regime, especially, the motion can approximately … [Phys. Rev. A 92, 023803] Published Mon Aug 03, 2015

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

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Large and small Fermi-surface spin density waves in the Kondo lattice model (2015)

Robert Peters and Norio Kawakami

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-04

Beschreibung: Author(s): Robert Peters and Norio Kawakami We demonstrate the existence of metallic spin density waves (SDWs) in the Kondo lattice model on a square lattice for a wide range of parameters by means of real space dynamical mean-field theory. In these SDWs, the spin polarization as well as the charge density depend on the lattice site and are m… [Phys. Rev. B 92, 075103] Published Mon Aug 03, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Interactions along an entanglement cut in 2+1D Abelian topological phases (2015)

Jennifer Cano, Taylor L. Hughes, and Michael Mulligan

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-04

Beschreibung: Author(s): Jennifer Cano, Taylor L. Hughes, and Michael Mulligan A given fractional quantum Hall state may admit multiple, distinct edge phases on its boundary. We explore the implications that multiple edge phases have for the entanglement spectrum and entropy of a given bulk state. We describe the precise manner in which the entanglement spectrum depends upon l… [Phys. Rev. B 92, 075104] Published Mon Aug 03, 2015

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Pseudopotential for the electron-electron interaction (2015)

J. H. Lloyd-Williams, R. J. Needs, and G. J. Conduit

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-06

Beschreibung: Author(s): J. H. Lloyd-Williams, R. J. Needs, and G. J. Conduit We propose a pseudopotential for the electron-electron Coulomb interaction to improve the efficiency of many-body electronic structure calculations. The pseudopotential accurately replicates the scattering properties of the Coulomb interaction, and recovers the analytical solution for two electrons … [Phys. Rev. B 92, 075106] Published Wed Aug 05, 2015

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Non-Abelian phases in two-component ν=2/3 fractional quantum Hall states: Emergence of Fibonacci anyons (2015)

Zhao Liu, Abolhassan Vaezi, Kyungmin Lee, and Eun-Ah Kim

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-06

Beschreibung: Author(s): Zhao Liu, Abolhassan Vaezi, Kyungmin Lee, and Eun-Ah Kim Recent theoretical insights into the possibility of non-Abelian phases in ν = 2 / 3 fractional quantum Hall states revived the interest in the numerical phase diagram of the problem. We investigate the effect of various kinds of two-body interlayer couplings on the (330) bilayer state and exactly solve … [Phys. Rev. B 92, 081102(R)] Published Wed Aug 05, 2015

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NMR evidence of anisotropic Kondo liquid behavior in CeIrIn_{5} (2015)

A. C. Shockley, K. R. Shirer, J. Crocker, A. P. Dioguardi, C. H. Lin, D. M. Nisson, N. ap; Roberts-Warren, P. Klavins, and N. J. Curro

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-06

Beschreibung: Author(s): A. C. Shockley, K. R. Shirer, J. Crocker, A. P. Dioguardi, C. H. Lin, D. M. Nisson, N. apRoberts-Warren, P. Klavins, and N. J. Curro We report detailed Knight-shift measurements of the two indium sites in the heavy-fermion compound CeIrIn 5 as a function of temperature and field orientation. We find that the Knight-shift anomaly is orientation dependent, with a crossover temperature T * that varies by 50% as the field is rotated fr… [Phys. Rev. B 92, 085108] Published Wed Aug 05, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Scanning tunneling microscopy of the charge density wave in 1T−TiSe_{2} in the presence of single atom defects (2015)

A. M. Novello, B. Hildebrand, A. Scarfato, C. Didiot, G. Monney, A. Ubaldini, H. Berger, D. R. Bowler, P. Aebi, and Ch. Renner

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-06

Beschreibung: Author(s): A. M. Novello, B. Hildebrand, A. Scarfato, C. Didiot, G. Monney, A. Ubaldini, H. Berger, D. R. Bowler, P. Aebi, and Ch. Renner We present a detailed low-temperature scanning tunneling microscopy (STM) study of the commensurate charge density wave (CDW) in 1 T − TiSe 2 in the presence of single atom defects. We find no significant modification of the CDW lattice in single crystals with native defect concentrations where some bul… [Phys. Rev. B 92, 081101(R)] Published Tue Aug 04, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Thermodynamic consistency of the charge response in dynamical mean-field based approaches (2015)

Erik G. C. P. van Loon, Hartmut Hafermann, Alexander I. Lichtenstein, and Mikhail I. Katsnelson

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-06

Beschreibung: Author(s): Erik G. C. P. van Loon, Hartmut Hafermann, Alexander I. Lichtenstein, and Mikhail I. Katsnelson We consider the thermodynamic consistency of the charge response function in the (extended) Hubbard model. In dynamical mean-field theory (DMFT), thermodynamic consistency is preserved. We prove that the static, homogeneous DMFT susceptibility is consistent as long as vertex corrections obtained fro… [Phys. Rev. B 92, 085106] Published Tue Aug 04, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Toolbox for continuous-variable entanglement production and measurement using spontaneous parametric down-conversion (2015)

G. Boucher, T. Douce, D. Bresteau, S. P. Walborn, A. Keller, T. Coudreau, S. Ducci, and P. Milman

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-06

Beschreibung: Author(s): G. Boucher, T. Douce, D. Bresteau, S. P. Walborn, A. Keller, T. Coudreau, S. Ducci, and P. Milman We provide a toolbox for continuous-variable quantum-state engineering and characterization of biphoton states produced by spontaneous parametric down-conversion in a transverse pump configuration. We show that the control of the pump beam's incidence spot and angle corresponds to phase-space displa… [Phys. Rev. A 92, 023804] Published Tue Aug 04, 2015

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

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Renormalization group analysis of a neck-narrowing Lifshitz transition in the presence of weak short-range interactions in two dimensions (2015)

Sedigh Ghamari, Sung-Sik Lee, and Catherine Kallin

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-08

Beschreibung: Author(s): Sedigh Ghamari, Sung-Sik Lee, and Catherine Kallin We study a system of weakly interacting electrons described by the energy dispersion ξ ( k ) = k x 2 − k y 2 − μ in two dimensions within a renormalization group approach. This energy dispersion exhibits a neck-narrowing Lifshitz transition at the critical chemical potential μ c = 0 where a van Hove singularity dev… [Phys. Rev. B 92, 085112] Published Thu Aug 06, 2015

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t_{2g} -orbital model on a honeycomb lattice: Application to the antiferromagnet SrRu_{2} O_{6} (2015)

Da Wang, Wan-Sheng Wang, and Qiang-Hua Wang

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-08

Beschreibung: Author(s): Da Wang, Wan-Sheng Wang, and Qiang-Hua Wang Motivated by the recent discovery of high-temperature antiferromagnet SrRu 2 O 6 [Hiley et al. , Angew. Chem. Int. Ed. 53 , 4423 (2014) ; Tian et al. , arXiv:1504.03642 ] and its potential to be the parent of a new superconductor upon doping, we construct a minimal t 2 g -orbital model on a honeycomb lattice… [Phys. Rev. B 92, 075112] Published Fri Aug 07, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Control of plasmon fields via irreversible ultrafast dynamics caused by interaction of infrared laser pulses with quantum-dot–metallic-nanoparticle molecules (2015)

S. M. Sadeghi, W. J. Wing, and R. R. Gutha

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-08

Beschreibung: Author(s): S. M. Sadeghi, W. J. Wing, and R. R. Gutha We study irreversible ultrafast dynamics caused by interaction of a semiconductor quantum-dot–metallic-nanorod system with an infrared laser field. We show that when this system supports exciton-plasmon coupling, by just varying the amplitude of this laser for a short period of time (several nanosec… [Phys. Rev. A 92, 023808] Published Fri Aug 07, 2015

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

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Dichroism as a probe for parity-breaking phases of spin-orbit coupled metals (2015)

M. R. Norman

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-08

Beschreibung: Author(s): M. R. Norman Recently, a general formalism was presented for gyrotropic, ferroelectric, and multipolar order in spin-orbit coupled metals induced by spin-spin interactions. Here, I point out that the resulting order parameters are equivalent to expectation values of operators that determine natural circular dich… [Phys. Rev. B 92, 075113] Published Fri Aug 07, 2015

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Transport properties for a quantum dot coupled to normal leads with a pseudogap (2015)

Bunpei Hara, Akihisa Koga, and Tomosuke Aono

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-08

Beschreibung: Author(s): Bunpei Hara, Akihisa Koga, and Tomosuke Aono We study transport properties for a quantum dot coupled to normal leads with a pseudogap density of states at zero temperature, using the second-order perturbation theory based on the Keldysh formalism. We clarify that the hybridization function Γ ( ω ) ∝ | ω | r ( 0 ≤ r 〈 1 ) induces the cusp or dip structure … [Phys. Rev. B 92, 081103(R)] Published Thu Aug 06, 2015

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Spin-dependent two-color Kapitza-Dirac effects (2015)

S. McGregor, W. C.-W. Huang, B. A. Shadwick, and H. Batelaan

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-19

Beschreibung: Author(s): S. McGregor, W. C.-W. Huang, B. A. Shadwick, and H. Batelaan In this paper we present an analysis of the spin behavior of electrons propagating through a laser field. We present an experimentally realizable scenario in which spin-dependent effects of the interaction between the laser and the electrons are dominant. The laser interaction strength and incident … [Phys. Rev. A 92, 023834] Published Tue Aug 18, 2015

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

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Determination of Tomonaga-Luttinger parameters for a two-component liquid (2015)

Olabode M. Sule, Hitesh J. Changlani, Isao Maruyama, and Shinsei Ryu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-19

Beschreibung: Author(s): Olabode M. Sule, Hitesh J. Changlani, Isao Maruyama, and Shinsei Ryu We provide evidence for the mapping of critical spin-1 chains, in particular the SU ( 3 ) symmetric bilinear-biquadratic model with additional interactions, to free boson theories using exact diagonalization and the density-matrix renormalization-group algorithm. Using the correspondence with a conform… [Phys. Rev. B 92, 075128] Published Tue Aug 18, 2015

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Large-gap quantum spin Hall states in decorated stanene grown on a substrate (2015)

Yong Xu, Peizhe Tang, and Shou-Cheng Zhang

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-19

Beschreibung: Author(s): Yong Xu, Peizhe Tang, and Shou-Cheng Zhang Two-dimensional stanene is a promising candidate material for realizing a room-temperature quantum spin Hall (QSH) effect. Monolayer stanene has recently been fabricated by molecular beam epitaxy, but shows metallic features on a Bi 2 Te 3 (111) substrate, which motivates us to study the important influ… [Phys. Rev. B 92, 081112(R)] Published Tue Aug 18, 2015

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Optical event horizons from the collision of a soliton and its own dispersive wave (2015)

S. F. Wang, A. Mussot, M. Conforti, A. Bendahmane, X. L. Zeng, and A. Kudlinski

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-21

Beschreibung: Author(s): S. F. Wang, A. Mussot, M. Conforti, A. Bendahmane, X. L. Zeng, and A. Kudlinski We observe experimentally the spectral signature of the collision between a soliton and the dispersive wave initially emitted from the soliton itself. This collision, interpreted in terms of an optical event horizon, is controlled by the use of an axially varying fiber which allows us to shape both … [Phys. Rev. A 92, 023837] Published Thu Aug 20, 2015

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Testing the nonlocal kinetic energy functional of an inhomogeneous, two-dimensional degenerate Fermi gas within the average density approximation (2015)

J. Towers, B. P. van Zyl, and W. Kirkby

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-21

Beschreibung: Author(s): J. Towers, B. P. van Zyl, and W. Kirkby In a recent paper [B. P. van Zyl et al. , Phys. Rev. A 89 , 022503 (2014) ], the average density approximation (ADA) was implemented to develop a parameter-free, nonlocal kinetic energy functional to be used in the orbital-free density functional theory of an inhomogeneous, two-dimensional (2D) Fermi … [Phys. Rev. B 92, 075129] Published Thu Aug 20, 2015

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PT-symmetric invisible defects and confluent Darboux-Crum transformations (2015)

Francisco Correa, Vít Jakubský, and Mikhail S. Plyushchay

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-21

Beschreibung: Author(s): Francisco Correa, Vít Jakubský, and Mikhail S. Plyushchay We show that confluent Darboux-Crum transformations with emergent Jordan states are an effective tool for the design of optical systems governed by the Helmholtz equation under the paraxial approximation. The construction of generic, asymptotically real and periodic, P T -symmetric systems with local … [Phys. Rev. A 92, 023839] Published Thu Aug 20, 2015

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Pulse splitting in light propagation through N-type atomic media due to an interplay of Kerr nonlinearity and group-velocity dispersion (2015)

Rajitha K. V., Tarak N. Dey, Jörg Evers, and Martin Kiffner

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-21

Beschreibung: Author(s): Rajitha K. V., Tarak N. Dey, Jörg Evers, and Martin Kiffner We investigate the spatiotemporal evolution of a Gaussian probe pulse propagating through a four-level N -type atomic medium. At two-photon resonance of probe and control fields, weaker probe pulses may propagate through the medium with low absorption and pulse shape distortion. In contrast, we find … [Phys. Rev. A 92, 023840] Published Thu Aug 20, 2015

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Manifestations of topological band crossings in bulk entanglement spectrum: An analytical study for integer quantum Hall states (2015)

Chi-Ken Lu, Dah-Wei Chiou, and Feng-Li Lin

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-21

Beschreibung: Author(s): Chi-Ken Lu, Dah-Wei Chiou, and Feng-Li Lin We consider integer quantum Hall states and calculate the bulk entanglement spectrum by formulating the correlation matrix in the guiding center representation. Our analytical approach is based on the strategy of redefining the inner product of states in the Hilbert space, via a projection operator,… [Phys. Rev. B 92, 075130] Published Thu Aug 20, 2015

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Incomplete protection of the surface Weyl cones of the Kondo insulator SmB_{6} : Spin exciton scattering (2015)

G. A. Kapilevich, P. S. Riseborough, A. X. Gray, M. Gulacsi, Tomasz Durakiewicz, and J. L. Smith

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-21

Beschreibung: Author(s): G. A. Kapilevich, P. S. Riseborough, A. X. Gray, M. Gulacsi, Tomasz Durakiewicz, and J. L. Smith The compound SmB 6 is a Kondo insulator, where the lowest-energy bulk electronic excitations are spin-excitons. It also has surface states that are subjected to strong spin-orbit coupling. It has been suggested that SmB 6 is also a topological insulator. Here we show that, despite the absence of time-… [Phys. Rev. B 92, 085133] Published Thu Aug 20, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Real-space Eliashberg approach to charge order of electrons coupled to dynamic antiferromagnetic fluctuations (2015)

Johannes Bauer and Subir Sachdev

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-21

Beschreibung: Author(s): Johannes Bauer and Subir Sachdev We study charge-ordered solutions for fermions on a square lattice interacting with dynamic antiferromagnetic fluctuations. Our approach is based on real-space Eliashberg equations, which are solved self-consistently. We first show that the antiferromagnetic fluctuations can induce arc features in t… [Phys. Rev. B 92, 085134] Published Thu Aug 20, 2015

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Three-photon resonance and adiabatic passage in the large-detuning Rabi model (2015)

Ken K. W. Ma and C. K. Law

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-22

Beschreibung: Author(s): Ken K. W. Ma and C. K. Law We investigate theoretically the quantum Rabi model in the large-detuning regime. When the frequency of the cavity field is near one-third of the atomic transition frequency, we show that there exists a resonant three-photon coupling via intermediate states connected by counter-rotating processes. W… [Phys. Rev. A 92, 023842] Published Fri Aug 21, 2015

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

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Radiation torques exerted on a sphere by focused Laguerre-Gaussian beams (2015)

Huachao Yu and Weilong She

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-25

Beschreibung: Author(s): Huachao Yu and Weilong She Radiation torques exerted by focused Laguerre-Gaussian beams on a microsphere are investigated with the generalized Lorenz-Mie theory. It is shown that the spin and orbital torques, in particular, those exerted by circularly polarized beams, can be far larger than the net torque in magnitude, which … [Phys. Rev. A 92, 023844] Published Mon Aug 24, 2015

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

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Single-cycle coherent terahertz-pulse propagation in rigid-rotor molecular media (2015)

Robert Marskar and Ulf L. Österberg

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-25

Beschreibung: Author(s): Robert Marskar and Ulf L. Österberg We theoretically analyze linear and nonlinear coherent propagation of linearly polarized, plane-wave, resonant single-cycle terahertz pulses through spatially extended rigid-rotor molecular media. Our model incorporates mixed state medium preparation, nonperturbative nonlinearities, saturation, cohe… [Phys. Rev. A 92, 023843] Published Mon Aug 24, 2015

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

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SU(1,1)-type light-atom-correlated interferometer (2015)

Hongmei Ma, Dong Li, Chun-Hua Yuan, L. Q. Chen, Z. Y. Ou, and Weiping Zhang

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-25

Beschreibung: Author(s): Hongmei Ma, Dong Li, Chun-Hua Yuan, L. Q. Chen, Z. Y. Ou, and Weiping Zhang The quantum correlation of light and atomic collective excitation can be used to compose an SU(1,1)-type hybrid light-atom interferometer, where one arm in the optical SU(1,1) interferometer is replaced by the atomic collective excitation. The phase-sensing probes include not only the photon field b… [Phys. Rev. A 92, 023847] Published Mon Aug 24, 2015

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

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Bose-Hubbard ladder subject to effective magnetic field: Quench dynamics in a harmonic trap (2015)

Wladimir Tschischik, Roderich Moessner, and Masudul Haque

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-25

Beschreibung: Author(s): Wladimir Tschischik, Roderich Moessner, and Masudul Haque Motivated by a recent experiment with optical lattices that has realized a ladder geometry with an effective magnetic field [Atala et al. , Nat. Phys. 10 , 588 (2014) ], we study the dynamics of bosons on a tight-binding two-leg ladder with complex hopping amplitudes. This system displays a quantum ph… [Phys. Rev. A 92, 023845] Published Mon Aug 24, 2015

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Tunable fast and slow light in a hybrid optomechanical system (2015)

M. Javed Akram, M. Miskeen Khan, and Farhan Saif

American Physical Society (APS)

In: Physical Review A

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Beschreibung: Author(s): M. Javed Akram, M. Miskeen Khan, and Farhan Saif We explain the probe field transmission spectrum under the influence of a strong pump field in a hybrid optomechanical system, composed of an optical cavity, a mechanical resonator, and a two-level atom. We show fast (superluminal) and slow (subluminal) light effects of the transmitted probe field i… [Phys. Rev. A 92, 023846] Published Mon Aug 24, 2015

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Electronic spin susceptibilities and superconductivity in HgBa_{2} CuO_{4+δ} from nuclear magnetic resonance (2015)

Damian Rybicki, Jonas Kohlrautz, Jürgen Haase, Martin Greven, Xudong Zhao, Mun K. Chan, Chelsey J. Dorow, and Michael J. Veit

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-25

Beschreibung: Author(s): Damian Rybicki, Jonas Kohlrautz, Jürgen Haase, Martin Greven, Xudong Zhao, Mun K. Chan, Chelsey J. Dorow, and Michael J. Veit Nuclear magnetic resonance (NMR) experiments on single crystals of HgBa 2 CuO 4 + δ are presented that identify two distinct temperature-dependent spin susceptibilities: One is due to a spin component that is temperature-dependent above the critical temperature for superconductivity ( T c ) and reflects pse… [Phys. Rev. B 92, 081115(R)] Published Mon Aug 24, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Sr_{2} Ir_{1−x} Rh_{x} O_{4} (x〈0.5): An inhomogeneous j_{eff} =1/2 Hubbard system (2015)

Shalinee Chikara, Daniel Haskel, Jae-Hoon Sim, Heung-Sik Kim, Cheng-Chien Chen, G. Fabbris, L. S. I. Veiga, N. M. Souza-Neto, J. Terzic, K. Butrouna, G. Cao, Myung Joon Han, and Michel van Veenendaal

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-25

Beschreibung: Author(s): Shalinee Chikara, Daniel Haskel, Jae-Hoon Sim, Heung-Sik Kim, Cheng-Chien Chen, G. Fabbris, L. S. I. Veiga, N. M. Souza-Neto, J. Terzic, K. Butrouna, G. Cao, Myung Joon Han, and Michel van Veenendaal In a combined experimental and theoretical study, we investigate the properties of Sr 2 Ir 1 − x Rh x O 4 . From the branching ratios of the L -edge isotropic x-ray absorption spectra, we determine that the spin-orbit coupling is remarkably independent of x for both iridium and rhodium sites. DFT + U calculation… [Phys. Rev. B 92, 081114(R)] Published Mon Aug 24, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Spatially resolved Landau level spectroscopy of the topological Dirac cone of bulk-type Sb_{2} Te_{3} (0001): Potential fluctuations and quasiparticle lifetime (2015)

C. Pauly, C. Saunus, M. Liebmann, and M. Morgenstern

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-25

Beschreibung: Author(s): C. Pauly, C. Saunus, M. Liebmann, and M. Morgenstern Using low-temperature scanning tunneling spectroscopy, we probe the Landau levels of the topologically protected state of Sb 2 Te 3 (0001) after in situ cleavage of a single crystal. Landau levels are visible for magnetic fields B ≥ 2 T at energies, which confirm the Dirac type dispersion including the ze… [Phys. Rev. B 92, 085140] Published Mon Aug 24, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Camelback-shaped band reconciles heavy-electron behavior with weak electronic Coulomb correlations in superconducting TlNi_{2} Se_{2} (2015)

N. Xu, C. E. Matt, P. Richard, A. van Roekeghem, S. Biermann, X. Shi, S.-F. Wu, H. W. Liu, D. Chen, T. Qian, N. C. Plumb, M. Radović, Hangdong Wang, Qianhui Mao, Jianhua Du, Minghu Fang, J. Mesot, H. Ding, and M. Shi

American Physical Society (APS)

In: Physical Review B

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Beschreibung: Author(s): N. Xu, C. E. Matt, P. Richard, A. van Roekeghem, S. Biermann, X. Shi, S.-F. Wu, H. W. Liu, D. Chen, T. Qian, N. C. Plumb, M. Radović, Hangdong Wang, Qianhui Mao, Jianhua Du, Minghu Fang, J. Mesot, H. Ding, and M. Shi Combining photoemission spectroscopy, Raman spectroscopy, and first-principles calculations, we characterize superconducting TlNi 2 Se 2 as a material with weak electronic Coulomb correlations leading to a bandwidth renormalization of 1.4. We identify a camelback-shaped band, whose energetic position s… [Phys. Rev. B 92, 081116(R)] Published Mon Aug 24, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Metal-insulator transition and local-moment collapse in FeO under pressure (2015)

I. Leonov

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-25

Beschreibung: Author(s): I. Leonov We employ a combination of the ab initio band-structure methods and dynamical mean-field theory to determine the electronic structure and phase stability of paramagnetic FeO at high pressure and temperature. Our results reveal a high-spin to low-spin transition within the B1 crystal structure of FeO… [Phys. Rev. B 92, 085142] Published Mon Aug 24, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Perturbative unidirectional invisibility (2015)

Ali Mostafazadeh

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-19

Beschreibung: Author(s): Ali Mostafazadeh We outline a general perturbative method of evaluating scattering features of finite-range complex potentials and use it to examine complex perturbations of a rectangular barrier potential. In optics, these correspond to modulated refractive index profiles of the form n ( x ) = n 0 + f ( x ) , where n 0 is real,… [Phys. Rev. A 92, 023831] Published Tue Aug 18, 2015

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

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Nonclassical polarization dynamics in classical-like states (2015)

Alfredo Luis and Ángel S. Sanz

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-19

Beschreibung: Author(s): Alfredo Luis and Ángel S. Sanz Quantum polarization is investigated by means of a trajectory picture based on the Bohmian formulation of quantum mechanics. Relevant examples of classical-like two-mode field states are thus examined, namely, Glauber and SU(2) coherent states. Although these states are often regarded as classical, … [Phys. Rev. A 92, 023832] Published Tue Aug 18, 2015

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

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Measuring the nonseparability of vector vortex beams (2015)

Melanie McLaren, Thomas Konrad, and Andrew Forbes

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-19

Beschreibung: Author(s): Melanie McLaren, Thomas Konrad, and Andrew Forbes Vector beams have the defining property of nonseparable spatial and polarization degrees of freedom and are now routinely generated in the laboratory and used in a myriad of applications. Here we exploit the nonseparability of such beams, akin to entanglement of quantum states, to apply tools tradit… [Phys. Rev. A 92, 023833] Published Tue Aug 18, 2015

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

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Dynamic conductivity scaling in photoexcited V_{2} O_{3} thin films (2015)

Elsa Abreu, Siming Wang, Juan Gabriel Ramírez, Mengkun Liu, Jingdi Zhang, Kun Geng, Ivan K. Schuller, and Richard D. Averitt

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-19

Beschreibung: Author(s): Elsa Abreu, Siming Wang, Juan Gabriel Ramírez, Mengkun Liu, Jingdi Zhang, Kun Geng, Ivan K. Schuller, and Richard D. Averitt Optical-pump terahertz-probe spectroscopy is used to investigate ultrafast far-infrared conductivity dynamics during the insulator-to-metal transition in vanadium sesquioxide ( V 2 O 3 ) . The resultant conductivity increase occurs on a tens of picosecond time scale, exhibiting a strong dependence on the … [Phys. Rev. B 92, 085130] Published Tue Aug 18, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Robust Josephson-Kondo screening cloud in circuit quantum electrodynamics (2015)

Izak Snyman and Serge Florens

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-19

Beschreibung: Author(s): Izak Snyman and Serge Florens We investigate the entanglement properties of a standard circuit-QED setup that consists of a Cooper pair box coupled to a long chain of Josephson junctions. We calculate the static charge polarization at finite distances along the device. Our calculations reveal a deep connection to the Kondo scree… [Phys. Rev. B 92, 085131] Published Tue Aug 18, 2015

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Interplay of electron-electron and electron-phonon interactions in the low-temperature phase of 1T−TaS_{2} (2015)

Doohee Cho, Yong-Heum Cho, Sang-Wook Cheong, Ki-Seok Kim, and Han Woong Yeom

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-19

Beschreibung: Author(s): Doohee Cho, Yong-Heum Cho, Sang-Wook Cheong, Ki-Seok Kim, and Han Woong Yeom We investigate the interplay of the electron-electron and electron-phonon interactions in the electronic structure of an exotic insulating state in the layered dichalcogenide 1 T − TaS 2 , where the charge-density-wave (CDW) order coexists with a Mott correlation gap. Scanning tunneling microscopy and sp… [Phys. Rev. B 92, 085132] Published Tue Aug 18, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Tunable multiple Fano resonances in magnetic single-layered core-shell particles (2015)

Tiago J. Arruda, Alexandre S. Martinez, and Felipe A. Pinheiro

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-20

Beschreibung: Author(s): Tiago J. Arruda, Alexandre S. Martinez, and Felipe A. Pinheiro We investigate multiple Fano, comblike scattering resonances in single-layered, concentric core-shell nanoparticles composed of magnetic materials. Using the Lorenz-Mie theory, we derive, in the long-wavelength limit, an analytical condition for the occurrence of comblike resonances in the single sc… [Phys. Rev. A 92, 023835] Published Wed Aug 19, 2015

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Unconventional photon blockade with second-order nonlinearity (2015)

Y. H. Zhou, H. Z. Shen, and X. X. Yi

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-21

Beschreibung: Author(s): Y. H. Zhou, H. Z. Shen, and X. X. Yi The photon blockade based on weak nonlinearities is called the unconventional photon blockade. The study of the unconventional photon blockade in recent decades has mainly focused on the χ ( 3 ) Kerr nonlinearity. In this paper, we study the photon blockade in two weakly coupled nonlinear cavities via … [Phys. Rev. A 92, 023838] Published Thu Aug 20, 2015

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Quantum oscillations in the heavy-fermion compound YbPtBi (2015)

E. Mun, S. L. Bud'ko, Y. Lee, C. Martin, M. A. Tanatar, R. Prozorov, and P. C. Canfield

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-21

Beschreibung: Author(s): E. Mun, S. L. Bud'ko, Y. Lee, C. Martin, M. A. Tanatar, R. Prozorov, and P. C. Canfield Heavy fermion systems are useful for studying quantum criticality because the low energy scale associated with their large effective mass can be tuned by nonthermal control parameters. Here, Shubnikov-de Haas oscillations are observed in YbPtBi, a heavy fermion compound with an exceptionally large effective mass for electrons, at a high magnetic field that reveals the shape of the Fermi surface. In the future these observations, when combined with additional data at lower magnetic fields, could provide important information about quantum criticality in these systems. [Phys. Rev. B 92, 085135] Published Thu Aug 20, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Dynamical and anharmonic effects on the electron-phonon coupling and the zero-point renormalization of the electronic structure (2015)

G. Antonius, S. Poncé, E. Lantagne-Hurtubise, G. Auclair, X. Gonze, and M. Côté

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-22

Beschreibung: Author(s): G. Antonius, S. Poncé, E. Lantagne-Hurtubise, G. Auclair, X. Gonze, and M. Côté The renormalization of the band structure at zero temperature due to electron-phonon coupling is explored in diamond, BN, LiF, and MgO crystals. We implement a dynamical scheme to compute the frequency-dependent self-energy and the resulting quasiparticle electronic structure. Our calculations revea… [Phys. Rev. B 92, 085137] Published Fri Aug 21, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Electron-phonon coupling in a system with broken symmetry: Surface of Be(0001) (2015)

Te; Yu Chien (簡德宇), Xiaobo He, Sung-Kwan Mo, Makoto Hashimoto, Zahid Hussain, Zhi-Xun Shen, and E. W. Plummer

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-22

Beschreibung: Author(s): TeYu Chien (簡德宇), Xiaobo He, Sung-Kwan Mo, Makoto Hashimoto, Zahid Hussain, Zhi-Xun Shen, and E. W. Plummer The momentum-resolved Eliashberg function (ELF) α 2 F ( ω , k ⇀ ) for the Be ( 0001 ) zone-center surface state was extracted from the high-quality angle-resolved photoemission spectroscopy (ARPES) data at the Fermi energy in the Γ ¯ → M ¯ direction, displaying ten peaks. A comparison of the peaks in the ELF to th… [Phys. Rev. B 92, 075133] Published Fri Aug 21, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Chiral degeneracies and Fermi-surface Chern numbers in bcc Fe (2015)

Daniel Gosálbez-Martínez, Ivo Souza, and David Vanderbilt

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-22

Beschreibung: Author(s): Daniel Gosálbez-Martínez, Ivo Souza, and David Vanderbilt Using bcc Fe as a playground, the authors investigate the presence of chiral degeneracies in realistic band structures of ferromagnetic materials. They find ubiquitous Weyl points and demonstrate that Chern numbers can be transferred between Fermi sheets by varying the Fermi level or an external parameter such as the magnetization direction. [Phys. Rev. B 92, 085138] Published Fri Aug 21, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Compression of correlation matrices and an efficient method for forming matrix product states of fermionic Gaussian states (2015)

Matthew T. Fishman and Steven R. White

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-22

Beschreibung: Author(s): Matthew T. Fishman and Steven R. White Here we present an efficient and numerically stable procedure for compressing a correlation matrix into a set of local unitary single-particle gates, which leads to a very efficient way of forming the matrix product state (MPS) approximation of a pure fermionic Gaussian state, such as the ground sta… [Phys. Rev. B 92, 075132] Published Fri Aug 21, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Low-energy model and electron-hole doping asymmetry of single-layer Ruddlesden-Popper iridates (2015)

Alexander Hampel, Christoph Piefke, and Frank Lechermann

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-25

Beschreibung: Author(s): Alexander Hampel, Christoph Piefke, and Frank Lechermann We study the correlated electronic structure of single-layer iridates based on structurally undistorted Ba 2 IrO 4 . Starting from the first-principles band structure, the interplay between local Coulomb interactions and spin-orbit coupling is investigated by means of rotational-invariant slave-boson me… [Phys. Rev. B 92, 085141] Published Mon Aug 24, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Precision measurement of a low-loss cylindrical dumbbell-shaped sapphire mechanical oscillator using radiation pressure (2015)

J. Bourhill, E. Ivanov, and M. E. Tobar

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-12

Beschreibung: Author(s): J. Bourhill, E. Ivanov, and M. E. Tobar We present first results from a number of experiments conducted on a 0.53-kg cylindrical dumbbell-shaped sapphire crystal. Here we report on an optomechanical experiment utilizing a modification to the typical cylindrical architecture. Mechanical motion of the crystal structure alters the dimensions… [Phys. Rev. A 92, 023817] Published Tue Aug 11, 2015

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

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Quantum noise of free-carrier dispersion in semiconductor optical cavities (2015)

Ryan Hamerly and Hideo Mabuchi

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-13

Beschreibung: Author(s): Ryan Hamerly and Hideo Mabuchi This paper derives Langevin equations for an optical cavity where the dominant nonlinearity arises from free-carrier dispersion. We define a generalized Wigner function, compute a Fokker-Planck equation that approximates the master equation, and convert this to a system of stochastic differential eq… [Phys. Rev. A 92, 023819] Published Wed Aug 12, 2015

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Solitons in a nonlinear Schrödinger equation with PT-symmetric potentials and inhomogeneous nonlinearity: Stability and excitation of nonlinear modes (2015)

Zhenya Yan, Zichao Wen, and Vladimir V. Konotop

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-15

Beschreibung: Author(s): Zhenya Yan, Zichao Wen, and Vladimir V. Konotop We report branches of explicit expressions for nonlinear modes in parity-time ( PT ) -symmetric potentials of several types. For the single-well and double-well potentials the found solutions are two-parametric and appear to be stable even when the PT symmetry of respective underlying linear models is … [Phys. Rev. A 92, 023821] Published Thu Aug 13, 2015

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

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Nonequilibrium transport and statistics of Schwinger pair production in Weyl semimetals (2015)

Szabolcs Vajna, Balázs Dóra, and R. Moessner

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-15

Beschreibung: Author(s): Szabolcs Vajna, Balázs Dóra, and R. Moessner The nonequilibrium dynamics beyond the linear response of Weyl semimetals is studied after a sudden switching on of a dc electric field. The resulting current is a nonmonotonic function of time with an initial quick increase in polarization current followed by a power-law decay. Particle-hole creati… [Phys. Rev. B 92, 085122] Published Thu Aug 13, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Curvilinear optical forces (2015)

Andrey Novitsky

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-15

Beschreibung: Author(s): Andrey Novitsky Accelerating a light beam makes a particle move along a curvilinear trajectory. We show that the curvature of the trajectory causes a special kind of nonconservative force, which is called a curvilinear force. We obtain the expression for this force acting on a spherical particle in the Rayleigh app… [Phys. Rev. A 92, 023823] Published Fri Aug 14, 2015

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

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Cluster-based mean-field and perturbative description of strongly correlated fermion systems: Application to the one- and two-dimensional Hubbard model (2015)

Carlos A. Jiménez-Hoyos and Gustavo E. Scuseria

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-04

Beschreibung: Author(s): Carlos A. Jiménez-Hoyos and Gustavo E. Scuseria We introduce a mean-field and a perturbative approach, based on clusters, to describe the ground state of fermionic strongly correlated systems. In the cluster mean-field approach, the ground-state wave function is written as a simple tensor product over optimized cluster states. The optimization of… [Phys. Rev. B 92, 085101] Published Mon Aug 03, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Wannier function approach to realistic Coulomb interactions in layered materials and heterostructures (2015)

M. Rösner, E. Şaşıoğlu, C. Friedrich, S. Blügel, and T. O. Wehling

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-04

Beschreibung: Author(s): M. Rösner, E. Şaşıoğlu, C. Friedrich, S. Blügel, and T. O. Wehling We introduce an approach to derive realistic Coulomb interaction terms in freestanding layered materials and vertical heterostructures from ab initio modeling of the corresponding bulk materials. To this end, we establish a combination of calculations within the framework of the constrained random-p… [Phys. Rev. B 92, 085102] Published Mon Aug 03, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Anomalous quantum Hall effect induced by disorder in topological insulators (2015)

Laurent Raymond, Alberto D. Verga, and Arnaud Demion

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-04

Beschreibung: Author(s): Laurent Raymond, Alberto D. Verga, and Arnaud Demion We investigate a transition between a two-dimensional topological insulator conduction state, characterized by a conductance G = 2 (in fundamental units e 2 / h ) and a Chern insulator with G = 1 , induced by polarized magnetic impurities. Two kinds of coupling, ferromagnetic and antiferromagnetic, are consi… [Phys. Rev. B 92, 075101] Published Mon Aug 03, 2015

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Robust local and nonlocal transport in the topological Kondo insulator SmB_{6} in the presence of a high magnetic field (2015)

Sangram Biswas, Ramya Nagarajan, Suman Sarkar, Kazi Rafsanjani Amin, M. Ciomaga Hatnean, S. Tewari, G. Balakrishnan, and Aveek Bid

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-04

Beschreibung: Author(s): Sangram Biswas, Ramya Nagarajan, Suman Sarkar, Kazi Rafsanjani Amin, M. Ciomaga Hatnean, S. Tewari, G. Balakrishnan, and Aveek Bid SmB 6 has been predicted to be a Kondo topological insulator with topologically protected conducting surface states. We have studied quantitatively the electrical transport through surface states in high-quality single crystals of SmB 6 . We observe a large nonlocal surface signal at temperatures lower… [Phys. Rev. B 92, 085103] Published Mon Aug 03, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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FLEX+DMFT approach to the d-wave superconducting phase diagram of the two-dimensional Hubbard model (2015)

Motoharu Kitatani, Naoto Tsuji, and Hideo Aoki

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-04

Beschreibung: Author(s): Motoharu Kitatani, Naoto Tsuji, and Hideo Aoki The dynamical mean-field theory (DMFT) combined with the fluctuation exchange (FLEX) method, namely, FLEX+DMFT, is an approach for correlated electron systems to incorporate both local and nonlocal long-range correlations in a self-consistent manner. We formulate FLEX+DMFT in a systematic way starti… [Phys. Rev. B 92, 085104] Published Mon Aug 03, 2015

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Single-photon transport through an atomic chain coupled to a one-dimensional nanophotonic waveguide (2015)

Zeyang Liao, Xiaodong Zeng, Shi-Yao Zhu, and M. Suhail Zubairy

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-06

Beschreibung: Author(s): Zeyang Liao, Xiaodong Zeng, Shi-Yao Zhu, and M. Suhail Zubairy We study the dynamics of a single-photon pulse traveling through a linear atomic chain coupled to a one-dimensional (1D) single mode photonic waveguide. We derive a time-dependent dynamical theory for this collective many-body system which allows us to study the real time evolution of the photon tra… [Phys. Rev. A 92, 023806] Published Wed Aug 05, 2015

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

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Quantum noise of a white-light cavity using a double-pumped gain medium (2015)

Yiqiu Ma, Haixing Miao, Chunnong Zhao, and Yanbei Chen

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-06

Beschreibung: Author(s): Yiqiu Ma, Haixing Miao, Chunnong Zhao, and Yanbei Chen Laser interferometric gravitational-wave detectors implement Fabry-Pérot cavities to increase their peak sensitivity. However, this is at the cost of reducing their detection bandwidth, which originates from the propagation phase delay of the light. The “white-light-cavity” idea, first proposed by W… [Phys. Rev. A 92, 023807] Published Wed Aug 05, 2015

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

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Composition and temperature dependence of the Yb valence in YbMn_{6} Ge_{6−x} Sn_{x} studied by RIXS (2015)

T. Mazet, D. Malterre, M. François, L. Eichenberger, M. Grioni, C. Dallera, and G. Monaco

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-06

Beschreibung: Author(s): T. Mazet, D. Malterre, M. François, L. Eichenberger, M. Grioni, C. Dallera, and G. Monaco We investigate the composition and temperature (10–450 K) dependence of the Yb valence in YbMn 6 Ge 6 − x Sn x ( x = 0.0 , 3.8, 4.2, 4.4, and 5.5) using resonant inelastic x-ray scattering (RIXS). The observed change in the Yb valence with composition (from υ ∼ 3 for x = 0 to υ ∼ 2.7 for x = 5.5 ) is likely driven by n… [Phys. Rev. B 92, 075105] Published Wed Aug 05, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Post-measurement bipartite entanglement entropy in conformal field theories (2015)

M. A. Rajabpour

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-06

Beschreibung: Author(s): M. A. Rajabpour We derive exact formulas for bipartite von Neumann entanglement entropy after partial projective local measurement in ( 1 + 1 ) -dimensional conformal field theories with periodic and open boundary conditions. After defining the setup we will check numerically the validity of our results in the case of K… [Phys. Rev. B 92, 075108] Published Wed Aug 05, 2015

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Blackbody aperture radiation: Effect of cavity wall (2015)

Kasimir Blomstedt, Tero Setälä, and Ari T. Friberg

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-06-06

Beschreibung: Author(s): Kasimir Blomstedt, Tero Setälä, and Ari T. Friberg In this paper we show that the coherence properties of the radiation emanating from an aperture in the single wall of a half-space blackbody cavity can be determined by considering how free-space blackbody radiation is scattered by those apertures. That is, although the presence of the cavity wall m... [Phys. Rev. A 91, 063805] Published Thu Jun 04, 2015

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

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Coherent destruction of tunneling in a lattice array with a controllable boundary (2015)

Liping Li, Xiaobing Luo, Xin-You Lü, Xiaoxue Yang, and Ying Wu

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-06-06

Beschreibung: Author(s): Liping Li, Xiaobing Luo, Xin-You Lü, Xiaoxue Yang, and Ying Wu We have investigated how the dynamics of a quantum particle initially localized in the left boundary site under periodic driving can be manipulated via control of the right boundary site of a lattice array. Because of the adjustable coupling between the right boundary site and its nearest neighbor, ... [Phys. Rev. A 91, 063804] Published Wed Jun 03, 2015

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Surface states of perovskite iridates AIrO_{3}: Signatures of a topological crystalline metal with nontrivial Z_{2} index (2015)

Heung-Sik Kim, Yige Chen, and Hae-Young Kee

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-06-06

Beschreibung: Author(s): Heung-Sik Kim, Yige Chen, and Hae-Young Kee There have been increasing efforts in realizing topological metallic phases with nontrivial surface states. It was suggested that orthorhombic perovskite iridates are classified as a topological crystalline metal (TCM) with flat surface states protected by lattice symmetries. Here we perform first-p... [Phys. Rev. B 91, 235103] Published Wed Jun 03, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Charge transport in Ho_{x}Lu_{1−x}B_{12}: Separating positive and negative magnetoresistance in metals with magnetic ions (2015)

N. E. Sluchanko, A. L. Khoroshilov, M. A. Anisimov, A. N. Azarevich, A. V. Bogach, V. V. Glushkov, S. V. Demishev, V. N. Krasnorussky, N. A. Samarin, N. Yu. Shitsevalova, V. B. Filippov, A. V. Levchenko, G. Pristas, S. Gabani, and K. Flachbart

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-06-06

Beschreibung: Author(s): N. E. Sluchanko, A. L. Khoroshilov, M. A. Anisimov, A. N. Azarevich, A. V. Bogach, V. V. Glushkov, S. V. Demishev, V. N. Krasnorussky, N. A. Samarin, N. Yu. Shitsevalova, V. B. Filippov, A. V. Levchenko, G. Pristas, S. Gabani, and K. Flachbart The magnetoresistance (MR) Δ ρ / ρ of the cage-glass compound Ho x Lu 1 − x B 12 with various concentrations of magnetic holmium ions ( x ≤ 0.5 ) has been studied in detail concurrently with magnetization M ( T ) and Hall effect investigations on high-quality single crystals at temperatures 1.9–120 K and in magnetic... [Phys. Rev. B 91, 235104] Published Wed Jun 03, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Casimir effect mechanism of pairing between fermions in the vicinity of a magnetic quantum critical point (2015)

Yaroslav A. Kharkov and Oleg P. Sushkov

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-06-06

Beschreibung: Author(s): Yaroslav A. Kharkov and Oleg P. Sushkov We consider two spin- 1 / 2 fermions in a two-dimensional magnetic system that is close to the O ( 3 ) magnetic quantum critical point (QCP) which separates magnetically ordered and disordered phases. Focusing on the disordered phase in the vicinity of the QCP, we demonstrate that the criticality results ... [Phys. Rev. B 91, 235105] Published Wed Jun 03, 2015

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Real-time observation of collective excitations in photoemission (2015)

C. Lemell, S. Neppl, G. Wachter, K. Tőkési, R. Ernstorfer, P. Feulner, R. Kienberger, and J. Burgdörfer

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-06-06

Beschreibung: Author(s): C. Lemell, S. Neppl, G. Wachter, K. Tőkési, R. Ernstorfer, P. Feulner, R. Kienberger, and J. Burgdörfer A method is proposed to solve a longstanding problem in photoelectron spectroscopy: the determination of the branching ratio between intrinsic and extrinsic plasmon generation. Attosecond metrology in combination with model simulations allow for a disentanglement of these excitation channels providing novel insight into the many-electron response of metals. [Phys. Rev. B 91, 241101(R)] Published Wed Jun 03, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Observation of the Kondo effect in a quadruple quantum dot (2015)

Runan Shang, Hai-Ou Li, Gang Cao, Guodong Yu, Ming Xiao, Tao Tu, Guang-Can Guo, Hongwen Jiang, A. M. Chang, and Guo-Ping Guo

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-06-06

Beschreibung: Author(s): Runan Shang, Hai-Ou Li, Gang Cao, Guodong Yu, Ming Xiao, Tao Tu, Guang-Can Guo, Hongwen Jiang, A. M. Chang, and Guo-Ping Guo We investigate the Kondo effect in a quadruple-quantum-dot device of coupled double quantum dots (DQDs), which simultaneously contain intra-DQD and inter-DQD coupling. A variety of novel behaviors are observed. The differential conductance dI / dV is measured in the upper DQDs as a function of source ... [Phys. Rev. B 91, 245102] Published Tue Jun 02, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

Print ISSN: 1098-0121

Digitale ISSN: 1095-3795

Thema: Physik

Publiziert von American Physical Society (APS)

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Virtual topological insulators with real quantized physics (2015)

Emil Prodan

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-06-06

Beschreibung: Author(s): Emil Prodan A concrete strategy is presented for generating strong topological insulators in d + d ′ dimensions which have quantized physics in d dimensions. Here, d counts the physical and d ′ the virtual dimensions. It consists of seeking d -dimensional representations of operator algebras which are usually define... [Phys. Rev. B 91, 245104] Published Wed Jun 03, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

Print ISSN: 1098-0121

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Thema: Physik

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Nonlinear Gamow vectors, shock waves, and irreversibility in optically nonlocal media (2015)

Silvia Gentilini, Maria Chiara Braidotti, Giulia Marcucci, Eugenio Del; Re, and Claudio Conti

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-04

Beschreibung: Author(s): Silvia Gentilini, Maria Chiara Braidotti, Giulia Marcucci, Eugenio DelRe, and Claudio Conti Gamow vectors are used to study nonlinear wave dynamics, and it is found that the quantization of the decay rates described by these vectors successfully explains the irreversibility of dispersive shock waves. [Phys. Rev. A 92, 023801] Published Mon Aug 03, 2015

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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Three-step approach for computing band offsets and its application to inorganic ABX_{3} halide perovskites (2015)

Li Lang, Yue-Yu Zhang, Peng Xu, Shiyou Chen, H. J. Xiang, and X. G. Gong

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-04

Beschreibung: Author(s): Li Lang, Yue-Yu Zhang, Peng Xu, Shiyou Chen, H. J. Xiang, and X. G. Gong Band offsets between different semiconductors are important parameters that determine the electronic transport properties near the interface in the heterostructure devices. The computation of the natural band offset is a well-known challenge. In this paper, we propose a new method, which is called t… [Phys. Rev. B 92, 075102] Published Mon Aug 03, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

Print ISSN: 1098-0121

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Thema: Physik

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Patterns of electromagnetic response in topological semimetals (2015)

Srinidhi T. Ramamurthy and Taylor L. Hughes

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-04

Beschreibung: Author(s): Srinidhi T. Ramamurthy and Taylor L. Hughes Topological semimetals are gapless states of matter which have robust and unique electromagnetic responses and surface states. In this paper, we consider semimetals which have pointlike Fermi surfaces in various spatial dimensions D = 1 , 2 , 3 which naturally occur in the transition between a weak topolo… [Phys. Rev. B 92, 085105] Published Mon Aug 03, 2015

Schlagwort(e): Electronic structure and strongly correlated systems

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Thema: Physik

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Collective behavior of Cr^{3+} ions in ruby revealed by whispering gallery modes (2015)

Jeremy Bourhill, Maxim Goryachev, Warrick G. Farr, and Michael E. Tobar

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2015-08-06

Beschreibung: Author(s): Jeremy Bourhill, Maxim Goryachev, Warrick G. Farr, and Michael E. Tobar We present evidence for the collective action of Cr 3 + ion impurities in a highly concentrated ruby crystal coupled to microwave whispering gallery modes (WGMs). The cylindrical geometry of the crystal allows the creation of superradiant or “spin-mode” doublets, with spatial structures similar to tha… [Phys. Rev. A 92, 023805] Published Tue Aug 04, 2015

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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