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1

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Parameter estimation in memory-assisted noisy quantum interferometry (2014)

P. Szańkowski, M. Trippenbach, and J. Chwedeńczuk

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-12

Beschreibung: Author(s): P. Szańkowski, M. Trippenbach, and J. Chwedeńczuk We demonstrate that memory in an N-qubit system subjected to decoherence, is a potential resource for the slowdown of the entanglement decay. We show that this effect can be used to retain the sub-shot-noise sensitivity of the parameter estimation in quantum interferometry. We calculate quantum Fish... [Phys. Rev. A 90, 063619] Published Thu Dec 11, 2014

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Thema: Physik

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Markovian evolution of strongly coupled harmonic oscillators (2014)

Chaitanya Joshi, Patrik Öhberg, James D. Cresser, and Erika Andersson

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-12

Beschreibung: Author(s): Chaitanya Joshi, Patrik Öhberg, James D. Cresser, and Erika Andersson We investigate how to model Markovian evolution of coupled harmonic oscillators, each of them interacting with a local environment. When the coupling between the oscillators is weak, dissipation may be modeled using local Lindblad terms for each of the oscillators in the master equation, as is commo... [Phys. Rev. A 90, 063815] Published Thu Dec 11, 2014

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

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Superfluidity and solid order in a two-component Bose gas with dipolar interactions in an optical lattice (2014)

Yoshihito Kuno, Keita Suzuki, and Ikuo Ichinose

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-12

Beschreibung: Author(s): Yoshihito Kuno, Keita Suzuki, and Ikuo Ichinose In this paper, we study an extended bosonic t-J model in an optical lattice, which describes two-component hard-core bosons with nearest-neighbor pseudospin interactions and, also, inter- and intraspecies dipole-dipole interactions. In particular, we focus on the case in which two-component hard-cor... [Phys. Rev. A 90, 063620] Published Thu Dec 11, 2014

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Propagation of nanofiber-guided light through an array of atoms (2014)

Fam Le Kien and A. Rauschenbeutel

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-16

Beschreibung: Author(s): Fam Le Kien and A. Rauschenbeutel We study the propagation of nanofiber-guided light through an array of atomic cesium, taking into account the transitions between the hyperfine levels 6S 1/2 F=4 and 6P 3/2 F ′ =5 of the D 2 line. We derive the coupled-mode propagation equation, the input-output equation, the scattering matrix, the transfe... [Phys. Rev. A 90, 063816] Published Mon Dec 15, 2014

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

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Nonequilibrium states of a quenched Bose gas (2014)

Ben Kain and Hong Y. Ling

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-18

Beschreibung: Author(s): Ben Kain and Hong Y. Ling Yin and Radzihovsky [X. Yin and L. Radzihovsky, Phys. Rev. A 88 , 063611 (2013)PLRAAN10.1103/PhysRevA.88.063611] recently developed a self-consistent extension of a Bogoliubov theory, in which the condensate number density n c is treated as a mean field that changes with time, in order to analyze a JI... [Phys. Rev. A 90, 063626] Published Wed Dec 17, 2014

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Thermally activated local collapse of a flattened dipolar condensate (2014)

E. B. Linscott and P. B. Blakie

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-07

Beschreibung: Author(s): E. B. Linscott and P. B. Blakie An analytical model that quantifies the energy barrier to local collapse of a flattened dipolar condensate is developed, and a stochastic Gross-Pitaevskii theory is used to perform finite-temperature simulations verifying the local collapse scenario. [Phys. Rev. A 90, 053605] Published Thu Nov 06, 2014

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Shaping topological properties of the band structures in a shaken optical lattice (2014)

Shao-Liang Zhang and Qi Zhou

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-07

Beschreibung: Author(s): Shao-Liang Zhang and Qi Zhou The realization of band structures with nontrivial topological properties in an optical lattice is an exciting topic in current studies of ultracold atoms. Here we point out that this lofty goal can be achieved by using a simple scheme of shaking an optical lattice, which is directly applicable in c... [Phys. Rev. A 90, 051601] Published Thu Nov 06, 2014

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Stabilization and Manipulation of Electronically Phase-Separated Ground States in Defective Indium Atom Wires on Silicon (2014)

Hui Zhang, Fangfei Ming, Hyun-Jung Kim, Hongbin Zhu, Qiang Zhang, Hanno H. Weitering, Xudong Xiao, Changgan Zeng, Jun-Hyung Cho, and Zhenyu Zhang

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-11-07

Beschreibung: Author(s): Hui Zhang, Fangfei Ming, Hyun-Jung Kim, Hongbin Zhu, Qiang Zhang, Hanno H. Weitering, Xudong Xiao, Changgan Zeng, Jun-Hyung Cho, and Zhenyu Zhang Exploration and manipulation of electronic states in low-dimensional systems are of great importance in the fundamental and practical aspects of nanomaterial and nanotechnology. Here, we demonstrate that the incorporation of vacancy defects into monatomic indium wires on n-type Si(111) can stabilize... [Phys. Rev. Lett. 113, 196802] Published Thu Nov 06, 2014

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

Print ISSN: 0031-9007

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9

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Noncoplanar and Counterrotating Incommensurate Magnetic Order Stabilized by Kitaev Interactions in γ-Li2IrO3 (2014)

A. Biffin, R. D. Johnson, I. Kimchi, R. Morris, A. Bombardi, J. G. Analytis, A. Vishwanath, and R. Coldea

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-11-07

Beschreibung: Author(s): A. Biffin, R. D. Johnson, I. Kimchi, R. Morris, A. Bombardi, J. G. Analytis, A. Vishwanath, and R. Coldea Materials that realize Kitaev spin models with bond-dependent anisotropic interactions have long been searched for, as the resulting frustration effects are predicted to stabilize novel forms of magnetic order or quantum spin liquids. Here, we explore the magnetism of γ-Li2IrO3, which has the topolo... [Phys. Rev. Lett. 113, 197201] Published Thu Nov 06, 2014

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Revealing Topological Superconductivity in Extended Quantum Spin Hall Josephson Junctions (2014)

Shu-Ping Lee, Karen Michaeli, Jason Alicea, and Amir Yacoby

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-11-07

Beschreibung: Author(s): Shu-Ping Lee, Karen Michaeli, Jason Alicea, and Amir Yacoby Quantum spin Hall–superconductor hybrids are promising sources of topological superconductivity and Majorana modes, particularly given recent progress on HgTe and InAs/GaSb. We propose a new method of revealing topological superconductivity in extended quantum spin Hall Josephson junctions supportin... [Phys. Rev. Lett. 113, 197001] Published Thu Nov 06, 2014

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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11

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What Determines the Fermi Wave Vector of Composite Fermions? (2014)

D. Kamburov, Yang Liu, M. A. Mueed, M. Shayegan, L. N. Pfeiffer, K. W. West, and K. W. Baldwin

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-11-07

Beschreibung: Author(s): D. Kamburov, Yang Liu, M. A. Mueed, M. Shayegan, L. N. Pfeiffer, K. W. West, and K. W. Baldwin Composite fermions (CFs), exotic particles formed by pairing an even number of flux quanta to each electron, provide a fascinating description of phenomena exhibited by interacting two-dimensional electrons at high magnetic fields. At and near Landau level filling ν=1/2, CFs occupy a Fermi sea and e... [Phys. Rev. Lett. 113, 196801] Published Thu Nov 06, 2014

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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12

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Pulling extremely anisotropic lossy particles using light without intensity gradient (2014)

Andrey Novitsky and Cheng-Wei Qiu

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-08

Beschreibung: Author(s): Andrey Novitsky and Cheng-Wei Qiu We study the effect of pulling optical force acting on a nonmagnetic anisotropic bead in electromagnetic fields without intensity gradient. Extreme anisotropy can be realized by a hyperbolic metamaterial made of metal-dielectric multilayers. We find that a passive anisotropic Rayleigh particle canno... [Phys. Rev. A 90, 053815] Published Fri Nov 07, 2014

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

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Generation of harmonics via multiphoton resonant excitation of hydrogenlike ions in an x-ray free-electron-laser field (2014)

H. K. Avetissian, B. R. Avchyan, and G. F. Mkrtchian

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-08

Beschreibung: Author(s): H. K. Avetissian, B. R. Avchyan, and G. F. Mkrtchian The coherent radiation spectrum of highly charged hydrogenlike ions in an intense x-ray free-electron-laser field is considered. The spectrum corresponding to harmonic generation in the resonant multiphoton excitation regime is investigated both analytically and numerically, arising from the Dirac H... [Phys. Rev. A 90, 053812] Published Fri Nov 07, 2014

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

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Manipulation and Characterization of Aperiodical Graphene Structures Created in a Two-Dimensional Electron Gas (2014)

Shiyong Wang, Liang Z. Tan, Weihua Wang, Steven G. Louie, and Nian Lin

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-11-08

Beschreibung: Author(s): Shiyong Wang, Liang Z. Tan, Weihua Wang, Steven G. Louie, and Nian Lin We demonstrate that Dirac fermions can be created and manipulated in a two-dimensional electron gas (2DEG). Using a cryogenic scanning tunneling microscope, we arranged coronene molecules one by one on a Cu(111) surface to construct artificial graphene nanoribbons with perfect zigzag (ZGNRs) or arm-... [Phys. Rev. Lett. 113, 196803] Published Fri Nov 07, 2014

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Vaporization of Kitaev Spin Liquids (2014)

Joji Nasu, Masafumi Udagawa, and Yukitoshi Motome

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-11-08

Beschreibung: Author(s): Joji Nasu, Masafumi Udagawa, and Yukitoshi Motome The quantum spin liquid is an exotic quantum state of matter in magnets. This state is a spin analog of liquid helium that does not solidify down to the lowest temperature due to strong quantum fluctuations. In conventional fluids, the liquid and gas possess the same symmetry and adiabatically conne... [Phys. Rev. Lett. 113, 197205] Published Fri Nov 07, 2014

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Fractionalized Charge Excitations in a Spin Liquid on Partially Filled Pyrochlore Lattices (2014)

Gang Chen, Hae-Young Kee, and Yong Baek Kim

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-11-08

Beschreibung: Author(s): Gang Chen, Hae-Young Kee, and Yong Baek Kim We study the Mott transition from a metal to cluster Mott insulators in the 1/4- and Please note that APS made slight change to the title of the paper1/8-filled pyrochlore lattice systems. It is shown that such Mott transitions can arise due to charge localization in clusters or in tetrahedron units... [Phys. Rev. Lett. 113, 197202] Published Fri Nov 07, 2014

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Sufficient Condition for Entanglement Area Laws in Thermodynamically Gapped Spin Systems (2014)

Jaeyoon Cho

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-11-08

Beschreibung: Author(s): Jaeyoon Cho We consider general locally interacting arbitrary-dimensional lattice spin systems that are gapped for any system size. We show under reasonable conditions that nondegenerate ground states of such systems obey the entanglement area law. In so doing, we offer an intuitive picture on how a spectral ga... [Phys. Rev. Lett. 113, 197204] Published Fri Nov 07, 2014

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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18

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Full Control of the Spin-Wave Damping in a Magnetic Insulator Using Spin-Orbit Torque (2014)

A. Hamadeh, O. d’Allivy Kelly, C. Hahn, H. Meley, R. Bernard, A. H. Molpeceres, V. V. Naletov, M. Viret, A. Anane, V. Cros, S. O. Demokritov, J. L. Prieto, M. Muñoz, G. de Loubens, and O. Klein

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-11-08

Beschreibung: Author(s): A. Hamadeh, O. d’Allivy Kelly, C. Hahn, H. Meley, R. Bernard, A. H. Molpeceres, V. V. Naletov, M. Viret, A. Anane, V. Cros, S. O. Demokritov, J. L. Prieto, M. Muñoz, G. de Loubens, and O. Klein It is demonstrated that the threshold current for damping compensation can be reached in a 5 μm diameter YIG(20 nm)|Pt(7 nm) disk. The demonstration rests upon the measurement of the ferromagnetic resonance linewidth as a function of Idc using a magnetic resonance force microscope (MRFM). It is s... [Phys. Rev. Lett. 113, 197203] Published Fri Nov 07, 2014

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Magnetic Resonance Detection of Individual Proton Spins Using Quantum Reporters (2014)

A. O. Sushkov, I. Lovchinsky, N. Chisholm, R. L. Walsworth, H. Park, and M. D. Lukin

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-11-04

Beschreibung: Author(s): A. O. Sushkov, I. Lovchinsky, N. Chisholm, R. L. Walsworth, H. Park, and M. D. Lukin An NMR scheme based on nitrogen vacancies in diamond images the spins of individual protons. [Phys. Rev. Lett. 113, 197601] Published Mon Nov 03, 2014

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Structural transitions of nearly second order in classical dipolar gases (2014)

Florian Cartarius, Giovanna Morigi, and Anna Minguzzi

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-04

Beschreibung: Author(s): Florian Cartarius, Giovanna Morigi, and Anna Minguzzi Particles with repulsive power-law interactions undergo a transition from a single to a double chain (zigzag) by decreasing the confinement in the transverse direction. We theoretically characterize this transition when the particles are classical dipoles, polarized perpendicularly to the plane in w... [Phys. Rev. A 90, 053601] Published Mon Nov 03, 2014

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Scattering resonances and bound states for strongly interacting Rydberg polaritons (2014)

P. Bienias, S. Choi, O. Firstenberg, M. F. Maghrebi, M. Gullans, M. D. Lukin, A. V. Gorshkov, and H. P. Büchler

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-04

Beschreibung: Author(s): P. Bienias, S. Choi, O. Firstenberg, M. F. Maghrebi, M. Gullans, M. D. Lukin, A. V. Gorshkov, and H. P. Büchler We provide a theoretical framework describing slow-light polaritons interacting via atomic Rydberg states. The method allows us to analytically derive the scattering properties of two polaritons. We identify parameter regimes where polariton-polariton interactions are repulsive. Furthermore, in the ... [Phys. Rev. A 90, 053804] Published Mon Nov 03, 2014

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

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Spin-Electricity Conversion Induced by Spin Injection into Topological Insulators (2014)

Y. Shiomi, K. Nomura, Y. Kajiwara, K. Eto, M. Novak, Kouji Segawa, Yoichi Ando, and E. Saitoh

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-11-04

Beschreibung: Author(s): Y. Shiomi, K. Nomura, Y. Kajiwara, K. Eto, M. Novak, Kouji Segawa, Yoichi Ando, and E. Saitoh We report successful spin injection into the surface states of topological insulators by using a spin pumping technique. By measuring the voltage that shows up across the samples as a result of spin pumping, we demonstrate that a spin-electricity conversion effect takes place in the surface states o... [Phys. Rev. Lett. 113, 196601] Published Mon Nov 03, 2014

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Bloch bound states in the radiation continuum in a periodic array of dielectric rods (2014)

Evgeny N. Bulgakov and Almas F. Sadreev

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-04

Beschreibung: Author(s): Evgeny N. Bulgakov and Almas F. Sadreev We consider an infinite periodic array of dielectric rods in vacuum with the aim to demonstrate three types of Bloch bound states in the continuum (BSCs): symmetry protected with a zero Bloch vector, embedded in one diffraction channel with nonzero Bloch vector, and embedded in two and three diffrac... [Phys. Rev. A 90, 053801] Published Mon Nov 03, 2014

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

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Single-photon modulation by the collective emission of an atomic chain (2014)

Zeyang Liao and M. Suhail Zubairy

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-04

Beschreibung: Author(s): Zeyang Liao and M. Suhail Zubairy We study the collective spontaneous emission of a linear atomic chain excited by a single photon. The interaction between the atoms and the common vacuum field can significantly change the eigenenergy and the spontaneous emission rate of the system. Due to the dipole-dipole interactions, the system ... [Phys. Rev. A 90, 053805] Published Mon Nov 03, 2014

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

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Condensation phenomena in plasmonics (2014)

J.-P. Martikainen, M. O. J. Heikkinen, and P. Törmä

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-06

Beschreibung: Author(s): J.-P. Martikainen, M. O. J. Heikkinen, and P. Törmä We study arrays of plasmonic nanoparticles combined with quantum emitters, quantum plasmonic lattices, as a platform for room-temperature studies of quantum many-body physics. We outline a theory to describe surface plasmon-polariton distributions when they are coupled to externally pumped molecules... [Phys. Rev. A 90, 053604] Published Wed Nov 05, 2014

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Optomechanical Ramsey interferometry (2014)

Kenan Qu, Chunhua Dong, Hailin Wang, and G. S. Agarwal

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-06

Beschreibung: Author(s): Kenan Qu, Chunhua Dong, Hailin Wang, and G. S. Agarwal We adopt Ramsey's method of separated oscillatory fields to study coherences of the mechanical system in an optomechanical resonator. The high-resolution Ramsey fringes are observed in the emission optical field, when two pulses separated in time are applied. We develop a theory to describe the tran... [Phys. Rev. A 90, 053809] Published Wed Nov 05, 2014

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

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Asymmetric Frequency Conversion in Nonlinear Systems Driven by a Biharmonic Pump (2014)

Archana Kamal, Ananda Roy, John Clarke, and Michel H. Devoret

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-12

Beschreibung: Author(s): Archana Kamal, Ananda Roy, John Clarke, and Michel H. Devoret A novel mechanism of asymmetric frequency conversion is investigated in nonlinear dispersive devices driven parametrically with a biharmonic pump. When the relative phase between the first and second harmonics combined in a two-tone pump is appropriately tuned, nonreciprocal frequency conversion, ei... [Phys. Rev. Lett. 113, 247003] Published Thu Dec 11, 2014

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Cooperative effects and disorder: A scaling analysis of the spectrum of the effective atomic Hamiltonian (2014)

L. Bellando, A. Gero, E. Akkermans, and R. Kaiser

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-16

Beschreibung: Author(s): L. Bellando, A. Gero, E. Akkermans, and R. Kaiser We study numerically the spectrum of the non-Hermitian effective Hamiltonian that describes the dipolar interaction of a gas of N≫1 atoms with the radiation field. We analyze the interplay between cooperative effects and disorder for both scalar and vectorial radiation fields. We show that for dense... [Phys. Rev. A 90, 063822] Published Mon Dec 15, 2014

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

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Prediction of Near-Room-Temperature Quantum Anomalous Hall Effect on Honeycomb Materials (2014)

Shu-Chun Wu, Guangcun Shan, and Binghai Yan

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-16

Beschreibung: Author(s): Shu-Chun Wu, Guangcun Shan, and Binghai Yan Recently, the long-sough quantum anomalous Hall effect was realized in a magnetic topological insulator. However, the requirement of an extremely low temperature (approximately 30 mK) hinders realistic applications. Based on ab initio band structure calculations, we propose a quantum anomalous Hall ... [Phys. Rev. Lett. 113, 256401] Published Mon Dec 15, 2014

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Quantum filtering of a thermal master equation with a purified reservoir (2014)

Marco G. Genoni, Stefano Mancini, Howard M. Wiseman, and Alessio Serafini

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-17

Beschreibung: Author(s): Marco G. Genoni, Stefano Mancini, Howard M. Wiseman, and Alessio Serafini We consider a system subject to a quantum optical master equation at finite temperature and study a class of conditional dynamics obtained by monitoring its totally or partially purified environment. More specifically, drawing from the notion that the thermal state of the environment may be regarded... [Phys. Rev. A 90, 063826] Published Tue Dec 16, 2014

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

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Stability of polarizable materials against superradiant phase transition (2014)

Motoaki Bamba and Tetsuo Ogawa

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-17

Beschreibung: Author(s): Motoaki Bamba and Tetsuo Ogawa The possibility of the superradiant phase transition in polarizable materials described by the minimal-coupling Hamiltonian with the longitudinal dipole-dipole interaction is examined. We try to reduce the Hamiltonian into the Dicke one in the homogeneous and infinite case, and discuss the stability... [Phys. Rev. A 90, 063825] Published Tue Dec 16, 2014

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

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Filtering of matter symmetry properties by circularly polarized nonlinear optics (2014)

Julien Duboisset, Hervé Rigneault, and Sophie Brasselet

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-18

Beschreibung: Author(s): Julien Duboisset, Hervé Rigneault, and Sophie Brasselet We propose a direct readout of symmetry information in matter using nonlinear optics. From combinations of circularly and longitudinally polarized optical fields, we construct irreducible spherical field tensors for second- and third-order nonlinear processes. The coupling of these field tensors to ... [Phys. Rev. A 90, 063827] Published Wed Dec 17, 2014

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

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Superradiance and collective gain in multimode optomechanics (2014)

T. Kipf and G. S. Agarwal

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-06

Beschreibung: Author(s): T. Kipf and G. S. Agarwal We present a description of a strongly driven multimode optomechanical system that shows the emergence of cooperative effects usually known from systems of atom-light interaction. Our calculations show that under application of a coherent pump field the system's response can be switched from a super... [Phys. Rev. A 90, 053808] Published Wed Nov 05, 2014

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

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Quantum manifestation of a synchronization transition in optomechanical systems (2014)

Lei Ying, Ying-Cheng Lai, and Celso Grebogi

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-11-06

Beschreibung: Author(s): Lei Ying, Ying-Cheng Lai, and Celso Grebogi Recent years have witnessed significant interest in nanoscale physical systems, such as nanoelectromechanical and optomechanical systems, which can exhibit distinct collective dynamical behaviors, such as synchronization. As a parameter of the system changes, transition from one type of emerging col... [Phys. Rev. A 90, 053810] Published Wed Nov 05, 2014

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

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Atom interferometer in a double-well potential (2014)

Karol Gietka and Jan Chwedeńczuk

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-02

Beschreibung: Author(s): Karol Gietka and Jan Chwedeńczuk We present a detailed study of an atom interferometer which can be realized in a double-well potential. We assume that the interferometric phase is imprinted in the presence of coherent tunneling between the wells. We calculate the ultimate bounds for the estimation sensitivity and show how they rel... [Phys. Rev. A 90, 063601] Published Mon Dec 01, 2014

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Three-dimensional atom localization by laser fields in a four-level tripod system (2014)

Vladimir S. Ivanov, Yuri V. Rozhdestvensky, and Kalle-Antti Suominen

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-02

Beschreibung: Author(s): Vladimir S. Ivanov, Yuri V. Rozhdestvensky, and Kalle-Antti Suominen We present a scheme for high-precision three-dimensional (3D) localization by the measurement of the atomic-level population. The scheme is applied to a four-level tripod-type atom coupled by three strong standing waves and a probe running wave. As a result, the atom can be localized in volumes that... [Phys. Rev. A 90, 063802] Published Mon Dec 01, 2014

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

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Unified position-dependent photon-number quantization in layered structures (2014)

Mikko Partanen, Teppo Häyrynen, Jani Oksanen, and Jukka Tulkki

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-02

Beschreibung: Author(s): Mikko Partanen, Teppo Häyrynen, Jani Oksanen, and Jukka Tulkki We have recently developed a position-dependent quantization scheme for describing the ladder and effective photon-number operators associated with the electric field to analyze quantum optical energy transfer in lossy and dispersive dielectrics [Phys. Rev. A 89 , 033831 (2014)PLRAAN10.1103/PhysRevA.... [Phys. Rev. A 90, 063804] Published Mon Dec 01, 2014

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

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Fast, all-optical logic gates and transistor functionalities using a room-temperature atomic controlled Kerr gate (2014)

R. B. Li, L. Deng, and E. W. Hagley

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-12-03

Beschreibung: Author(s): R. B. Li, L. Deng, and E. W. Hagley We demonstrate all-optical multilogic gate operations and transistor functionalities using a Kerr phase gate method in a room-temperature 85 Rb vapor. Two symmetric Mach-Zehnder interferometers are constructed in the same vapor cell in which a Raman gain medium is established. We show three basic log... [Phys. Rev. A 90, 063806] Published Tue Dec 02, 2014

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

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Circular-Polarization-Sensitive Metamaterial Based on Triple-Quantum-Dot Molecules (2014)

Panagiotis Kotetes, Pei-Qing Jin, Michael Marthaler, and Gerd Schön

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-03

Beschreibung: Author(s): Panagiotis Kotetes, Pei-Qing Jin, Michael Marthaler, and Gerd Schön We propose a new type of chiral metamaterial based on an ensemble of artificial molecules formed by three identical quantum dots in a triangular arrangement. A static magnetic field oriented perpendicular to the plane breaks mirror symmetry, rendering the molecules sensitive to the circular polariza... [Phys. Rev. Lett. 113, 236801] Published Tue Dec 02, 2014

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Effective Theory of Floquet Topological Transitions (2014)

Arijit Kundu, H. A. Fertig, and Babak Seradjeh

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-04

Beschreibung: Author(s): Arijit Kundu, H. A. Fertig, and Babak Seradjeh We develop a theory of topological transitions in a Floquet topological insulator, using graphene irradiated by circularly polarized light as a concrete realization. We demonstrate that a hallmark signature of such transitions in a static system, i.e., metallic bulk transport with conductivity of or... [Phys. Rev. Lett. 113, 236803] Published Wed Dec 03, 2014

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Noncollinear Paramagnetism of a GaAs Two-Dimensional Hole System (2014)

L. A. Yeoh, A. Srinivasan, O. Klochan, R. Winkler, U. Zülicke, M. Y. Simmons, D. A. Ritchie, M. Pepper, and A. R. Hamilton

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-04

Beschreibung: Author(s): L. A. Yeoh, A. Srinivasan, O. Klochan, R. Winkler, U. Zülicke, M. Y. Simmons, D. A. Ritchie, M. Pepper, and A. R. Hamilton We have performed transport measurements in tilted magnetic fields in a two-dimensional hole system grown on the surface of a (311)A GaAs crystal. A striking asymmetry of Shubnikov–de Haas oscillations occurs upon reversing the in-plane component of the magnetic field along the low-symmetry [2̅ ... [Phys. Rev. Lett. 113, 236401] Published Wed Dec 03, 2014

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Fibonacci Anyons From Abelian Bilayer Quantum Hall States (2014)

Abolhassan Vaezi and Maissam Barkeshli

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-04

Beschreibung: Author(s): Abolhassan Vaezi and Maissam Barkeshli The possibility of realizing non-Abelian statistics and utilizing it for topological quantum computation (TQC) has generated widespread interest. However, the non-Abelian statistics that can be realized in most accessible proposals is not powerful enough for universal TQC. In this Letter, we conside... [Phys. Rev. Lett. 113, 236804] Published Wed Dec 03, 2014

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Magnetism of Ho and Er Atoms on Close-Packed Metal Surfaces (2014)

F. Donati, A. Singha, S. Stepanow, C. Wäckerlin, J. Dreiser, P. Gambardella, S. Rusponi, and H. Brune

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-04

Beschreibung: Author(s): F. Donati, A. Singha, S. Stepanow, C. Wäckerlin, J. Dreiser, P. Gambardella, S. Rusponi, and H. Brune We investigated the magnetic properties of individual Ho atoms adsorbed on the (111) surface of Pt, which have been recently claimed to display single ion magnetic behavior. By combining x-ray absorption spectroscopy and magnetic dichroism measurements with ligand field multiplet calculations, we re... [Phys. Rev. Lett. 113, 237201] Published Wed Dec 03, 2014

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Quantum Spin Dimers from Chiral Dissipation in Cold-Atom Chains (2014)

Tomás Ramos, Hannes Pichler, Andrew J. Daley, and Peter Zoller

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-04

Beschreibung: Author(s): Tomás Ramos, Hannes Pichler, Andrew J. Daley, and Peter Zoller We consider the nonequilibrium dynamics of a driven dissipative spin chain with chiral coupling to a one-dimensional (1D) bosonic bath, and its atomic implementation with a two-species mixture of cold quantum gases. The reservoir is represented by a spin-orbit coupled 1D quasicondensate of atoms in ... [Phys. Rev. Lett. 113, 237203] Published Wed Dec 03, 2014

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Magnetic Damping: Domain Wall Dynamics versus Local Ferromagnetic Resonance (2014)

T. Weindler, H. G. Bauer, R. Islinger, B. Boehm, J.-Y. Chauleau, and C. H. Back

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-04

Beschreibung: Author(s): T. Weindler, H. G. Bauer, R. Islinger, B. Boehm, J.-Y. Chauleau, and C. H. Back Magnetic relaxation is one of the dominating features of magnetization dynamics. Depending on the magnetic structure and the experimental approach, different magnitudes of the damping parameter are reported even for a given material. In this study, we experimentally address this issue by accessing t... [Phys. Rev. Lett. 113, 237204] Published Wed Dec 03, 2014

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Protecting a Solid-State Spin from Decoherence Using Dressed Spin States (2014)

D. Andrew Golter, Thomas K. Baldwin, and Hailin Wang

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-04

Beschreibung: Author(s): D. Andrew Golter, Thomas K. Baldwin, and Hailin Wang We report experimental studies of dressing an electron spin in diamond with resonant and continuous microwave fields to protect the electron spin from magnetic fluctuations induced by the nuclear spin bath. We use optical coherent population trapping (CPT) to probe the energy level structure, optica... [Phys. Rev. Lett. 113, 237601] Published Wed Dec 03, 2014

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Are Hydrogen-Bonded Charge Transfer Crystals Room Temperature Ferroelectrics? (2014)

Gabriele D’Avino and Matthieu J. Verstraete

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-04

Beschreibung: Author(s): Gabriele D’Avino and Matthieu J. Verstraete We present a theoretical investigation of the anomalous ferroelectricity of mixed-stack charge transfer molecular crystals, based on the Peierls-Hubbard model, and first-principles calculations for its parametrization. This approach is first validated by reproducing the temperature-induced transitio... [Phys. Rev. Lett. 113, 237602] Published Wed Dec 03, 2014

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Quantum Selection of Order in an XXZ Antiferromagnet on a Kagome Lattice (2014)

A. L. Chernyshev and M. E. Zhitomirsky

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-04

Beschreibung: Author(s): A. L. Chernyshev and M. E. Zhitomirsky Selection of the ground state of the kagome-lattice XXZ antiferromagnet by quantum fluctuations is investigated by combining nonlinear spin-wave and real-space perturbation theories. The two methods unanimously favor q =0 over √ 3 ×√ 3 magnetic order in a wide range of the anisotropy parameter 0≤Δ≲0.72.... [Phys. Rev. Lett. 113, 237202] Published Wed Dec 03, 2014

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Spin-Orbit Fluctuations in Frustrated Heavy-Fermion Metal LiV_{2}O_{4} (2014)

K. Tomiyasu, K. Iwasa, H. Ueda, S. Niitaka, H. Takagi, S. Ohira-Kawamura, T. Kikuchi, Y. Inamura, K. Nakajima, and K. Yamada

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-05

Beschreibung: Author(s): K. Tomiyasu, K. Iwasa, H. Ueda, S. Niitaka, H. Takagi, S. Ohira-Kawamura, T. Kikuchi, Y. Inamura, K. Nakajima, and K. Yamada Spin fluctuations were studied over a wide momentum (ℏQ) and energy (E) space in the frustrated d-electron heavy-fermion metal LiV 2 O 4 by time-of-flight inelastic neutron scattering. We observed the overall Q−E evolutions near the characteristic Q=0.6 Å -1 peak and found another weak broad magnetic ... [Phys. Rev. Lett. 113, 236402] Published Thu Dec 04, 2014

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Electrical Spin Injection into High Mobility 2D Systems (2014)

M. Oltscher, M. Ciorga, M. Utz, D. Schuh, D. Bougeard, and D. Weiss

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-05

Beschreibung: Author(s): M. Oltscher, M. Ciorga, M. Utz, D. Schuh, D. Bougeard, and D. Weiss The injection of spins into a high-mobility two-dimensional electron gas is unexpectedly efficient, suggesting that new theories may be needed to describe spin transport in such systems. [Phys. Rev. Lett. 113, 236602] Published Thu Dec 04, 2014

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Spontaneous emission and thermalization of cold bosons in optical lattices (2014)

J. Schachenmayer, L. Pollet, M. Troyer, and A. J. Daley

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-11

Beschreibung: Author(s): J. Schachenmayer, L. Pollet, M. Troyer, and A. J. Daley We study the thermalization of excitations generated by spontaneous emission events for cold bosons in an optical lattice. Computing the dynamics described by the many-body master equation, we characterize equilibration time scales in different parameter regimes. For simple observables, we find regi... [Phys. Rev. A 89, 011601] Published Fri Jan 10, 2014

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Fermi-Liquid Computation of the Phase Diagram of High-Tc Cuprate Superconductors with an Orbital Antiferromagnetic Pseudogap (2014)

R. B. Laughlin

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-11

Beschreibung: Author(s): R. B. Laughlin A 4-parameter Fermi-liquid calculation of the high-Tc cuprate phase diagram is reported. Simultaneously accounted for are the special doping densities of 5% and 16%, the d-wave functional form of the (orbital antiferromagnetic) pseudogap, the measured Tc, superconducting gap, pseudogap and superflui... [Phys. Rev. Lett. 112, 017004] Published Fri Jan 10, 2014

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Spin and Orbital Contributions to Magnetically Ordered Moments in 5d Layered Perovskite Sr2IrO4 (2014)

S. Fujiyama, H. Ohsumi, K. Ohashi, D. Hirai, B. J. Kim, T. Arima, M. Takata, and H. Takagi

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-11

Beschreibung: Author(s): S. Fujiyama, H. Ohsumi, K. Ohashi, D. Hirai, B. J. Kim, T. Arima, M. Takata, and H. Takagi The ratio of orbital (L) and spin (S) contributions to the magnetically ordered moments of a 5d transition metal oxide, Sr2IrO4 was evaluated by nonresonant magnetic x-ray diffraction. We applied an improved experimental setting that minimized the experimental error, in which we varied only the line... [Phys. Rev. Lett. 112, 016405] Published Fri Jan 10, 2014

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Magnetic Field Induced Transition in Vanadium Spinels (2014)

E. D. Mun, Gia-Wei Chern, V. Pardo, F. Rivadulla, R. Sinclair, H. D. Zhou, V. S. Zapf, and C. D. Batista

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-11

Beschreibung: Author(s): E. D. Mun, Gia-Wei Chern, V. Pardo, F. Rivadulla, R. Sinclair, H. D. Zhou, V. S. Zapf, and C. D. Batista We study vanadium spinels AV2O4(A=Cd,Mg) in pulsed magnetic fields up to 65 T. A jump in magnetization at μ0H≈40 T is observed in the single-crystal MgV2O4, indicating a field induced quantum phase transition between two distinct magnetic orders. In the multiferroic CdV2O4, the field induced transi... [Phys. Rev. Lett. 112, 017207] Published Fri Jan 10, 2014

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Anomalous Hall Effect Arising from Noncollinear Antiferromagnetism (2014)

Hua Chen, Qian Niu, and A. H. Mac; Donald

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-11

Beschreibung: Author(s): Hua Chen, Qian Niu, and A. H. MacDonald As established in the very early work of Edwin Hall, ferromagnetic conductors have an anomalous Hall conductivity contribution that cannot be attributed to Lorentz forces and therefore survives in the absence of a magnetic field. These anomalous Hall conductivities are normally assumed to be proport... [Phys. Rev. Lett. 112, 017205] Published Fri Jan 10, 2014

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Finite-temperature dynamics of vortices in Bose-Einstein condensates (2014)

S. Gautam, Arko Roy, and Subroto Mukerjee

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-15

Beschreibung: Author(s): S. Gautam, Arko Roy, and Subroto Mukerjee We study the dynamics of a single vortex and a pair of vortices in quasi two-dimensional Bose-Einstein condensates at finite temperatures. To this end, we use the stochastic Gross–Pitaevskii equation, which is the Langevin equation for the Bose–Einstein condensate. For a pair of vortices, we study t... [Phys. Rev. A 89, 013612] Published Tue Jan 14, 2014

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Transition linewidth of cross correlations in random intensity fluctuations in electromagnetically induced transparency (2014)

Lei Feng, Pengxiong Li, Mengzhen Zhang, Tun Wang, and Yanhong Xiao

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-15

Beschreibung: Author(s): Lei Feng, Pengxiong Li, Mengzhen Zhang, Tun Wang, and Yanhong Xiao It is known that cross correlation between the random intensity fluctuations of two lasers forming electromagnetically induced transparency (EIT) exhibits a transition from correlation to anticorrelation. We study the linewidth behavior of this transition and have found the linewidth is below the (e... [Phys. Rev. A 89, 013815] Published Tue Jan 14, 2014

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

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Topologically Protected Conduction State at Carbon Foam Surfaces: An Ab initio Study (2014)

Zhen Zhu, Zacharias G. Fthenakis, Jie Guan, and David Tománek

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-15

Beschreibung: Author(s): Zhen Zhu, Zacharias G. Fthenakis, Jie Guan, and David Tománek We report results of ab initio electronic structure and quantum conductance calculations indicating the emergence of conduction at the surface of semiconducting carbon foams. The occurrence of new conduction states is intimately linked to the topology of the surface and not limited to foams of eleme... [Phys. Rev. Lett. 112, 026803] Published Tue Jan 14, 2014

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Coherent Operations and Screening in Multielectron Spin Qubits (2014)

A. P. Higginbotham, F. Kuemmeth, M. P. Hanson, A. C. Gossard, and C. M. Marcus

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-15

Beschreibung: Author(s): A. P. Higginbotham, F. Kuemmeth, M. P. Hanson, A. C. Gossard, and C. M. Marcus Multielectron spin qubits are demonstrated, and performance examined by comparing coherent exchange oscillations in coupled single-electron and multielectron quantum dots, measured in the same device. Fast (〉1 GHz) exchange oscillations with a quality factor Q∼15 are found for the multielectron ... [Phys. Rev. Lett. 112, 026801] Published Tue Jan 14, 2014

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From Dia- to Paramagnetic Orbital Susceptibility of Massless Fermions (2014)

A. Raoux, M. Morigi, J.-N. Fuchs, F. Piéchon, and G. Montambaux

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-15

Beschreibung: Author(s): A. Raoux, M. Morigi, J.-N. Fuchs, F. Piéchon, and G. Montambaux We study the orbital susceptibility of multiband systems with a pair of Dirac points interpolating between honeycomb and dice lattices. Despite having the same zero-field energy spectrum, these different systems exhibit spectacular differences in their orbital magnetic response, ranging from dia- to... [Phys. Rev. Lett. 112, 026402] Published Tue Jan 14, 2014

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Order, Criticality, and Excitations in the Extended Falicov-Kimball Model (2014)

S. Ejima, T. Kaneko, Y. Ohta, and H. Fehske

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-14

Beschreibung: Author(s): S. Ejima, T. Kaneko, Y. Ohta, and H. Fehske Using exact numerical techniques, we investigate the nature of excitonic (electron-hole) bound states and the development of exciton coherence in the one-dimensional half-filled extended Falicov-Kimball model. The ground-state phase diagram of the model exhibits, besides band-insulator and staggered... [Phys. Rev. Lett. 112, 026401] Published Mon Jan 13, 2014

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Effect of Electron-Phonon Interactions on Orbital Fluctuations in Iron-Based Superconductors (2014)

Yusuke Nomura, Kazuma Nakamura, and Ryotaro Arita

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-16

Beschreibung: Author(s): Yusuke Nomura, Kazuma Nakamura, and Ryotaro Arita To investigate the possibility of whether electron-phonon coupling can enhance orbital fluctuations in iron-based superconductors, we develop an ab initio method to construct the effective low-energy models including the phonon-related terms. With the derived effective electron-phonon interactions a... [Phys. Rev. Lett. 112, 027002] Published Wed Jan 15, 2014

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Resonant X-Ray Scattering and the jeff=1/2 Electronic Ground State in Iridate Perovskites (2014)

M. Moretti Sala, S. Boseggia, D. F. McMorrow, and G. Monaco

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-16

Beschreibung: Author(s): M. Moretti Sala, S. Boseggia, D. F. McMorrow, and G. Monaco The resonant x-ray scattering (magnetic elastic, RXMS, and inelastic, RIXS) of Ir4+ at the L2,3 edges relevant to spin-orbit Mott insulators An+1IrnO3n+1 (A=Sr, Ba, etc.) are calculated using a single-ion model which treats the spin-orbit and tetragonal crystal-field terms on an equal footing. Both ... [Phys. Rev. Lett. 112, 026403] Published Wed Jan 15, 2014

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Observation of Edge Transport in the Disordered Regime of Topologically Insulating InAs/GaSb Quantum Wells (2014)

Ivan Knez, Charles T. Rettner, See-Hun Yang, Stuart S. P. Parkin, Lingjie Du, Rui-Rui Du, and Gerard Sullivan

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-16

Beschreibung: Author(s): Ivan Knez, Charles T. Rettner, See-Hun Yang, Stuart S. P. Parkin, Lingjie Du, Rui-Rui Du, and Gerard Sullivan We observe edge transport in the topologically insulating InAs/GaSb system in the disordered regime. Using asymmetric current paths we show that conduction occurs exclusively along the device edge, exhibiting a large Hall signal at zero magnetic fields, while for symmetric current paths, the conduct... [Phys. Rev. Lett. 112, 026602] Published Wed Jan 15, 2014

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Molecular Quantum Magnetism in LiZn2Mo3O8 (2014)

M. Mourigal, W. T. Fuhrman, J. P. Sheckelton, A. Wartelle, J. A. Rodriguez-Rivera, D. L. Abernathy, T. M. McQueen, and C. L. Broholm

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-16

Beschreibung: Author(s): M. Mourigal, W. T. Fuhrman, J. P. Sheckelton, A. Wartelle, J. A. Rodriguez-Rivera, D. L. Abernathy, T. M. McQueen, and C. L. Broholm Inelastic neutron scattering at low temperatures T≤30 K from a powder of LiZn2Mo3O8 demonstrates this triangular-lattice antiferromagnet hosts collective magnetic excitations from spin-1/2 Mo3O13 molecules. Apparently gapless (Δ〈0.2 meV) and extending at least up to 2.5 meV, the low-energy magn... [Phys. Rev. Lett. 112, 027202] Published Wed Jan 15, 2014

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Counter-propagating Edge Modes and Topological Phases of a Kicked Quantum Hall System (2014)

Mahmoud Lababidi, Indubala I. Satija, and Erhai Zhao

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-16

Beschreibung: Author(s): Mahmoud Lababidi, Indubala I. Satija, and Erhai Zhao A periodically driven quantum Hall system in a fixed magnetic field is found to exhibit a series of phases featuring anomalous edge modes with the “wrong” chirality. This leads to pairs of counter-propagating chiral edge modes at each edge, in sharp contrast to stationary quantum Hall systems. We sh... [Phys. Rev. Lett. 112, 026805] Published Wed Jan 15, 2014

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Cubic Mn2Ga Thin Films: Crossing the Spin Gap with Ruthenium (2014)

H. Kurt, K. Rode, P. Stamenov, M. Venkatesan, Y.-C. Lau, E. Fonda, and J. M. D. Coey

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-16

Beschreibung: Author(s): H. Kurt, K. Rode, P. Stamenov, M. Venkatesan, Y.-C. Lau, E. Fonda, and J. M. D. Coey Cubic Mn2Ga films with the half-Heusler C1b structure are grown on V (001) epitaxial films. The phase is a soft ferrimagnet, with Curie temperature TC = 225 K and magnetization Ms=280 kA m−1, equivalent to 1.65μB per formula. Adding ruthenium leads to an increase of TC up to 550 K in cubic Mn2RuxGa... [Phys. Rev. Lett. 112, 027201] Published Wed Jan 15, 2014

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Nature of Quasielectrons and the Continuum of Neutral Bulk Excitations in Laughlin Quantum Hall Fluids (2014)

Bo Yang and F. D. M. Haldane

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-17

Beschreibung: Author(s): Bo Yang and F. D. M. Haldane We construct model wave functions for a family of single-quasielectron states supported by the ν=1/3 fractional quantum Hall fluid. The charge e*=e/3 quasielectron state is identified as a composite of a charge-2e* quasiparticle and a −e* quasihole, orbiting around their common center of charge with... [Phys. Rev. Lett. 112, 026804] Published Thu Jan 16, 2014

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Pairing effects in the nondegenerate limit of the two-dimensional Fermi gas (2014)

Marcus Barth and Johannes Hofmann

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-18

Beschreibung: Author(s): Marcus Barth and Johannes Hofmann The spectral function of a spin-balanced two-dimensional Fermi gas with short-range interactions is calculated by means of a quantum cluster expansion. Good qualitative agreement is found with a recent experiment by Feld et al. [Nature (London) 480 , 75 (2011)NATUAS10.1038/nature10627]. The effects o... [Phys. Rev. A 89, 013614] Published Fri Jan 17, 2014

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Matter correlations induced by coupling to quantum light (2014)

Frank Schlawin and Shaul Mukamel

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-24

Beschreibung: Author(s): Frank Schlawin and Shaul Mukamel Correlations between uncoupled particles induced by the interaction with different types of light are investigated using a superoperator formalism. We derive compact expressions for the doubly-excited-state distributions of noninteracting multilevel atoms excited by classical laser light, classical ... [Phys. Rev. A 89, 013830] Published Thu Jan 23, 2014

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Scale Invariance and Universality in a Cold Gas of Indirect Excitons (2014)

S. V. Andreev, A. A. Varlamov, and A. V. Kavokin

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-24

Beschreibung: Author(s): S. V. Andreev, A. A. Varlamov, and A. V. Kavokin We address, theoretically, the puzzling similarity observed in the thermodynamic behavior of independent clouds of cold dipolar excitons in coupled semiconductor quantum wells. We argue that the condensation of self-trapped exciton gas starts at the same critical temperature in all traps due to the ... [Phys. Rev. Lett. 112, 036401] Published Thu Jan 23, 2014

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Edge Theories in Projected Entangled Pair State Models (2014)

S. Yang, L. Lehman, D. Poilblanc, K. Van Acoleyen, F. Verstraete, J. I. Cirac, and N. Schuch

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-24

Beschreibung: Author(s): S. Yang, L. Lehman, D. Poilblanc, K. Van Acoleyen, F. Verstraete, J. I. Cirac, and N. Schuch We analyze the low energy excitations of spin lattice systems in two dimensions at zero temperature within the framework of projected entangled pair state models. Perturbations in the bulk give rise to physical excitations located at the edge. We identify the corresponding degrees of freedom, give a... [Phys. Rev. Lett. 112, 036402] Published Thu Jan 23, 2014

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Selective Equal-Spin Andreev Reflections Induced by Majorana Fermions (2014)

James J. He, T. K. Ng, Patrick A. Lee, and K. T. Law

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-24

Beschreibung: Author(s): James J. He, T. K. Ng, Patrick A. Lee, and K. T. Law In this work, we find that Majorana fermions induce selective equal spin Andreev reflections (SESARs), in which incoming electrons with certain spin polarization in the lead are reflected as counterpropagating holes with the same spin. The spin polarization direction of the electrons of this Andreev... [Phys. Rev. Lett. 112, 037001] Published Thu Jan 23, 2014

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Analytic results for a quantum quench from free to hard-core one-dimensional bosons (2014)

Márton Kormos, Mario Collura, and Pasquale Calabrese

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-14

Beschreibung: Author(s): Márton Kormos, Mario Collura, and Pasquale Calabrese It is widely believed that the stationary properties after a quantum quench in integrable systems can be described by a generalized Gibbs ensemble (GGE), even if all of the analytical evidence is based on free theories in which the pre- and postquench modes are linearly related. In contrast, we cons... [Phys. Rev. A 89, 013609] Published Mon Jan 13, 2014

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Quasidark state and quantum interference in the Jaynes-Cummings model with a common bath (2014)

Zhihai Wang and D. L. Zhou

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-14

Beschreibung: Author(s): Zhihai Wang and D. L. Zhou Within the capacity of current experiments, we design a composite atom-cavity system with a common bath, in which the decay channels of the atom and the cavity mode interfere with each other. When the direct atom-cavity coupling is absent, the system can be trapped in a quasidark state (the coherent... [Phys. Rev. A 89, 013809] Published Mon Jan 13, 2014

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

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Controlling a whispering-gallery-doublet-mode avoided frequency crossing: Strong coupling between photon bosonic and spin degrees of freedom (2014)

Maxim Goryachev, Warrick G. Farr, Daniel L. Creedon, and Michael E. Tobar

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-14

Beschreibung: Author(s): Maxim Goryachev, Warrick G. Farr, Daniel L. Creedon, and Michael E. Tobar A combination of electron spin interactions in a magnetic field allows us to control the resonance frequencies of a high-Q whispering-gallery (WG) cavity mode doublet, resulting in precise measurements of an avoided crossing between the two modes comprising the doublet. We show that the resonant pho... [Phys. Rev. A 89, 013810] Published Mon Jan 13, 2014

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

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Nonlocal gap solitons in PT-symmetric periodic potentials with defocusing nonlinearity (2014)

Chandroth P. Jisha, Alessandro Alberucci, Valeriy A. Brazhnyi, and Gaetano Assanto

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-14

Beschreibung: Author(s): Chandroth P. Jisha, Alessandro Alberucci, Valeriy A. Brazhnyi, and Gaetano Assanto Existence and stability of PT-symmetric gap solitons in a periodic structure with defocusing nonlocal nonlinearity are studied both theoretically and numerically. We find that, for any degree of nonlocality, gap solitons are always unstable in the presence of an imaginary potential. The instability ... [Phys. Rev. A 89, 013812] Published Mon Jan 13, 2014

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

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Transient lasing without inversion via forbidden and virtual transitions (2014)

Luqi Yuan, Dawei Wang, Anatoly A. Svidzinsky, Hui Xia, Olga Kocharovskaya, Alexei Sokolov, George R. Welch, Szymon Suckewer, and Marlan O. Scully

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-14

Beschreibung: Author(s): Luqi Yuan, Dawei Wang, Anatoly A. Svidzinsky, Hui Xia, Olga Kocharovskaya, Alexei Sokolov, George R. Welch, Szymon Suckewer, and Marlan O. Scully Lasing without inversion (LWI) in the extreme-ultraviolet (XUV) has been the focus of recent research of our Princeton/Texas group. Because of the restriction imposed on the decay rates associated with the usual LWI schemes, it is difficult to transfer the physics gleaned from previous experiments t... [Phys. Rev. A 89, 013814] Published Mon Jan 13, 2014

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

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Storage and retrieval of squeezing in multimode resonant quantum memories (2014)

K. Tikhonov, K. Samburskaya, T. Golubeva, and Yu. Golubev

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-14

Beschreibung: Author(s): K. Tikhonov, K. Samburskaya, T. Golubeva, and Yu. Golubev In this article the ability to record, store, and read out the quantum properties of light is studied. The discussion is based on high-speed and adiabatic models of quantum memory in λ configuration and in the limit of strong resonance. We show that in this case the equality between efficiency and s... [Phys. Rev. A 89, 013811] Published Mon Jan 13, 2014

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

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Perfect squeezing by damping modulation in circuit quantum electrodynamics (2014)

Nicolas Didier, Farzad Qassemi, and Alexandre Blais

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-18

Beschreibung: Author(s): Nicolas Didier, Farzad Qassemi, and Alexandre Blais Dissipation-driven quantum state engineering uses the environment to steer the state of quantum systems and preserve quantum coherence in the steady state. We show that modulating the damping rate of a microwave resonator generates a vacuum squeezed state of arbitrary squeezing strength, thereby con... [Phys. Rev. A 89, 013820] Published Fri Jan 17, 2014

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

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Tunable negative permeability in a quantum plasmonic metamaterial (2014)

K. R. McEnery, M. S. Tame, S. A. Maier, and M. S. Kim

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-22

Beschreibung: Author(s): K. R. McEnery, M. S. Tame, S. A. Maier, and M. S. Kim We consider the integration of quantum emitters into a negative permeability metamaterial design in order to introduce tunability as well as nonlinear behavior. The unit cell of our metamaterial is a ring of metamolecules, each consisting of a metal nanoparticle and a two-level semiconductor quantum... [Phys. Rev. A 89, 013822] Published Tue Jan 21, 2014

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

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Supercontinuum generation in both frequency and wavenumber domains in nonlinear waveguide arrays (2014)

Truong X. Tran, Dũng C. Duong, and Fabio Biancalana

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-22

Beschreibung: Author(s): Truong X. Tran, Dũng C. Duong, and Fabio Biancalana We study the spatiotemporal effects in waveguide arrays with Kerr and Raman nonlinearities when a short pulse is launched into the system where both dispersive and diffractive resonant radiations can be simultaneously emitted by solitons. We show that it is possible to generate and control the super... [Phys. Rev. A 89, 013826] Published Tue Jan 21, 2014

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

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Supersolid in a one-dimensional model of hard-core bosons (2014)

Tapan Mishra, Ramesh V. Pai, and Subroto Mukerjee

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-22

Beschreibung: Author(s): Tapan Mishra, Ramesh V. Pai, and Subroto Mukerjee We study a system of hard-core boson on a one-dimensional lattice with frustrated next-nearest-neighbor hopping and nearest-neighbor interaction. At half filling, for equal magnitude of nearest- and next-nearest-neighbor hopping, the ground state of this system exhibits a first-order phase transitio... [Phys. Rev. A 89, 013615] Published Tue Jan 21, 2014

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Optical pressure deduced from energy relations within relativistic formulations of electrodynamics (2014)

Cheyenne J. Sheppard and Brandon A. Kemp

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-22

Beschreibung: Author(s): Cheyenne J. Sheppard and Brandon A. Kemp The analysis of plane waves normally incident upon moving media yields a velocity-dependent net flow of electromagnetic energy within the system such that optical pressures are deduced. Two common formulations (Chu and Minkowski) are employed to model the phenomena with respect to the Abraham-Minkow... [Phys. Rev. A 89, 013825] Published Tue Jan 21, 2014

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

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Goldstone modes and bifurcations in phase-separated binary condensates at finite temperature (2014)

Arko Roy, S. Gautam, and D. Angom

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-22

Beschreibung: Author(s): Arko Roy, S. Gautam, and D. Angom We show that the third Goldstone mode, which emerges in binary condensates at phase separation, persists to higher interspecies interaction for density profiles where one component is surrounded on both sides by the other component. This is not the case with symmetry-broken density profiles where on... [Phys. Rev. A 89, 013617] Published Tue Jan 21, 2014

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Optical control of an atomic inner-shell x-ray laser (2014)

Gábor Darvasi, Christoph H. Keitel, and Christian Buth

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-22

Beschreibung: Author(s): Gábor Darvasi, Christoph H. Keitel, and Christian Buth X-ray free-electron lasers have had an enormous impact on x-ray science by achieving femtosecond pulses with unprecedented intensities. However, present-day facilities operating by the self-amplified spontaneous emission principle have a number of shortcomings; namely, their radiation has a chaotic ... [Phys. Rev. A 89, 013823] Published Tue Jan 21, 2014

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

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Strongly fluctuating fermionic superfluid in the attractive π-flux Hubbard model (2014)

Ya-Jie Wu, Jiang Zhou, and Su-Peng Kou

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-23

Beschreibung: Author(s): Ya-Jie Wu, Jiang Zhou, and Su-Peng Kou Ultracold atoms in an optical lattice provide a platform for realization of the superfluid (SF) state, a quantum order with paired charge-neutral fermions. In this paper, we study the SF state in the two-dimensional attractive Hubbard model with π flux on each plaquette. The SF state in the π-flux l... [Phys. Rev. A 89, 013619] Published Wed Jan 22, 2014

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Insulating State and Giant Nonlocal Response in an InAs/GaSb Quantum Well in the Quantum Hall Regime (2014)

Fabrizio Nichele, Atindra Nath Pal, Patrick Pietsch, Thomas Ihn, Klaus Ensslin, Christophe Charpentier, and Werner Wegscheider

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-23

Beschreibung: Author(s): Fabrizio Nichele, Atindra Nath Pal, Patrick Pietsch, Thomas Ihn, Klaus Ensslin, Christophe Charpentier, and Werner Wegscheider We present transport measurements performed in InAs/GaSb double quantum wells. At the electron-hole crossover tuned by a gate voltage, a strong increase in the longitudinal resistivity is observed with increasing perpendicular magnetic field. Concomitantly with a local resistance exceeding the resis... [Phys. Rev. Lett. 112, 036802] Published Wed Jan 22, 2014

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Screening Charged Impurities and Lifting the Orbital Degeneracy in Graphene by Populating Landau Levels (2014)

Adina Luican-Mayer, Maxim Kharitonov, Guohong Li, Chih-Pin Lu, Ivan Skachko, Alem-Mar B. Gonçalves, K. Watanabe, T. Taniguchi, and Eva Y. Andrei

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-24

Beschreibung: Author(s): Adina Luican-Mayer, Maxim Kharitonov, Guohong Li, Chih-Pin Lu, Ivan Skachko, Alem-Mar B. Gonçalves, K. Watanabe, T. Taniguchi, and Eva Y. Andrei We report the observation of an isolated charged impurity in graphene and present direct evidence of the close connection between the screening properties of a 2D electron system and the influence of the impurity on its electronic environment. Using scanning tunneling microscopy and Landau level spe... [Phys. Rev. Lett. 112, 036804] Published Thu Jan 23, 2014

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Realization of geometric Landau-Zener-Stückelberg interferometry (2014)

Junhua Zhang, Jingning Zhang, Xiang Zhang, and Kihwan Kim

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-11

Beschreibung: Author(s): Junhua Zhang, Jingning Zhang, Xiang Zhang, and Kihwan Kim We report an experimental realization of the geometric Landau-Zener-Stückelberg (LZS) interferometry proposed by Gasparinetti et al. [Phys. Rev. Lett. 107 , 207002 (2011)PRLTAO10.1103/PhysRevLett.107.207002] in a single-trapped-ion system. Unlike those in a conventional LZS interferometer, the interf... [Phys. Rev. A 89, 013608] Published Fri Jan 10, 2014

Schlagwort(e): Matter waves and collective properties of cold atoms and molecules

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Competing superfluid orders in spin-orbit-coupled fermionic cold-atom optical lattices (2014)

Yong Xu, Chunlei Qu, Ming Gong, and Chuanwei Zhang

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-11

Beschreibung: Author(s): Yong Xu, Chunlei Qu, Ming Gong, and Chuanwei Zhang The Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase, a superconducting state with nonzero total momentum Cooper pairs in a large magnetic field, was first predicted about 50 years ago and has since become an important concept in many branches of physics. Despite an intensive search in various material... [Phys. Rev. A 89, 013607] Published Fri Jan 10, 2014

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Spontaneous PT-symmetry breaking in complex frequency band structures (2014)

Vassilios Yannopapas

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-11

Beschreibung: Author(s): Vassilios Yannopapas We demonstrate that the process of band-gap creation in periodic solids such as atomic, photonic, or phononic crystals can be viewed as spontaneous PT-symmetry breaking in the framework of a complex frequency band structure. This allows the use of ordinary artificial structures such as Bragg stacks ... [Phys. Rev. A 89, 013808] Published Fri Jan 10, 2014

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Topologically Protected Magnetic Helix for All-Spin-Based Applications (2014)

E. Y. Vedmedenko and D. Altwein

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-11

Beschreibung: Author(s): E. Y. Vedmedenko and D. Altwein The recent years have witnessed an emergence of the field of all-spin-based devices without any flow of charge. An ultimate goal of this scientific direction is the realization of the full spectrum of spin-based networks as in modern electronics. The concept of energy-storing elements, indispensable... [Phys. Rev. Lett. 112, 017206] Published Fri Jan 10, 2014

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Quantum Hall Criticality and Localization in Graphene with Short-Range Impurities at the Dirac Point (2014)

S. Gattenlöhner, W.-R. Hannes, P. M. Ostrovsky, I. V. Gornyi, A. D. Mirlin, and M. Titov

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-15

Beschreibung: Author(s): S. Gattenlöhner, W.-R. Hannes, P. M. Ostrovsky, I. V. Gornyi, A. D. Mirlin, and M. Titov We explore the longitudinal conductivity of graphene at the Dirac point in a strong magnetic field with two types of short-range scatterers: adatoms that mix the valleys and “scalar” impurities that do not mix them. A scattering theory for the Dirac equation is employed to express the conductance of... [Phys. Rev. Lett. 112, 026802] Published Tue Jan 14, 2014

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Stochastic Current-Induced Magnetization Switching in a Single Semiconducting Ferromagnetic Layer (2014)

J. Gorchon, J. Curiale, A. Lemaître, N. Moisan, M. Cubukcu, G. Malinowski, C. Ulysse, G. Faini, H. J. von Bardeleben, and V. Jeudy

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-15

Beschreibung: Author(s): J. Gorchon, J. Curiale, A. Lemaître, N. Moisan, M. Cubukcu, G. Malinowski, C. Ulysse, G. Faini, H. J. von Bardeleben, and V. Jeudy We show experimental evidence of magnetization switching in a single (Ga,Mn)(As,P) semiconducting ferromagnetic layer, attributed to a strong reduction of the magnetization and the anisotropy due to current injection. The nucleation of magnetization reversal is found to occur even in the absence of ... [Phys. Rev. Lett. 112, 026601] Published Tue Jan 14, 2014

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Diffractionless image propagation and frequency conversion via four-wave mixing exploiting the thermal motion of atoms (2014)

Lida Zhang (张理达) and Jörg Evers

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-16

Beschreibung: Author(s): Lida Zhang (张理达) and Jörg Evers A setup to frequency-convert an arbitrary image encoded in the spatial profile of a probe field onto a signal field using four-wave mixing in a thermal atom vapor is proposed. The atomic motion is exploited to cancel diffraction of both signal and probe fields simultaneously. We show that an incoher... [Phys. Rev. A 89, 013817] Published Wed Jan 15, 2014

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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High-energy laser-pulse self-compression in short gas-filled fibers (2014)

P. N. Anderson, P. Horak, J. G. Frey, and W. S. Brocklesby

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-17

Beschreibung: Author(s): P. N. Anderson, P. Horak, J. G. Frey, and W. S. Brocklesby We examine the spatiotemporal compression of energetic femtosecond laser pules within short gas-filled fibers. The study is undertaken using an advanced nonlinear pulse propagation model based on a multimode generalized nonlinear Schrödinger equation that has been modified to include plasma effects.... [Phys. Rev. A 89, 013819] Published Thu Jan 16, 2014

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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98

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Tunable higher-order sideband spectra in a waveguide-coupled photonic crystal molecule beyond the weak-excitation approximation (2014)

Jiahua Li, Rong Yu, and Ying Wu

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-23

Beschreibung: Author(s): Jiahua Li, Rong Yu, and Ying Wu We investigate light transmission obtained from a hybrid optical system composed of a pair of directly coupled photonic crystal cavities called a photonic crystal molecule, a single semiconductor quantum dot, and a waveguide beyond the weak-excitation approximation. We take account of nonlinear term... [Phys. Rev. A 89, 015802] Published Wed Jan 22, 2014

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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99

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Deflection of nematicon-vortex vector solitons in liquid crystals (2014)

Gaetano Assanto, Antonmaria A. Minzoni, and Noel F. Smyth

American Physical Society (APS)

In: Physical Review A

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Publikationsdatum: 2014-01-23

Beschreibung: Author(s): Gaetano Assanto, Antonmaria A. Minzoni, and Noel F. Smyth The deflection of a vector soliton formed by a solitary wave and an optical vortex in nematic liquid crystals is investigated upon interaction with a localized refractive index defect. The azimuthal instability of the vortex can be triggered by the index perturbation and enhanced by the distortion o... [Phys. Rev. A 89, 013827] Published Wed Jan 22, 2014

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

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Thema: Physik

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100

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Bulk Dirac Points in Distorted Spinels (2014)

Julia A. Steinberg, Steve M. Young, Saad Zaheer, C. L. Kane, E. J. Mele, and Andrew M. Rappe

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-01-23

Beschreibung: Author(s): Julia A. Steinberg, Steve M. Young, Saad Zaheer, C. L. Kane, E. J. Mele, and Andrew M. Rappe We report on a Dirac-like Fermi surface in three-dimensional bulk materials in a distorted spinel structure on the basis of density functional theory as well as tight-binding theory. The four examples we provide in this Letter are BiZnSiO4, BiCaSiO4, BiAlInO4, and BiMgSiO4. A necessary characteristi... [Phys. Rev. Lett. 112, 036403] Published Wed Jan 22, 2014

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

Print ISSN: 0031-9007

Digitale ISSN: 1079-7114

Thema: Physik

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