Physical Review: Ultracold Bose and Fermi Gases http://publish.aps.org/ Ultracold Bose and Fermi Gases articles published in Physical Review Journals hourly 1 2012-02-09T20:06:17-05:00 rss@aps.org assocpub@aps.org 2012-02-09T20:06:17-05:00 en Copyright © 2012 the American Physical Society. Personal use only, all commercial or other reuse prohibited Copyright © 2012 the American Physical Society assocpub@aps.org Clock Shift in a Strongly Interacting Two-Dimensional Fermi Gas http://link.aps.org/doi/10.1103/PhysRevLett.108.060402 Author(s): Christian Langmack, Marcus Barth, Wilhelm Zwerger, and Eric Braaten<br/><p>We derive universal relations for the rf spectroscopy of a two-dimensional Fermi gas consisting of two spin states interacting through an <span><span style="font-style: italic;">S</span></span>-wave scattering length. The rf transition rate has a high-frequency tail that is proportional to the contact and displays logarithmic scaling violations, decrea...</p><br/>[Phys. Rev. Lett. 108, 060402] Published Thu Feb 09, 2012 Author(s): Christian Langmack, Marcus Barth, Wilhelm Zwerger, and Eric Braaten

We derive universal relations for the rf spectroscopy of a two-dimensional Fermi gas consisting of two spin states interacting through an S-wave scattering length. The rf transition rate has a high-frequency tail that is proportional to the contact and displays logarithmic scaling violations, decrea...

[Phys. Rev. Lett. 108, 060402] Published Thu Feb 09, 2012

]]> Clock Shift in a Strongly Interacting Two-Dimensional Fermi Gas Christian Langmack, Marcus Barth, Wilhelm Zwerger, and Eric Braaten 2012-02-09T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevLett.108.060402 Phys. Rev. Lett. 108, 060402 (2012) article Physical Review Letters 108 6 2012-02-09T10:00:00-05:00 10.1103/PhysRevLett.108.060402 http://link.aps.org/doi/10.1103/PhysRevLett.108.060402 060402 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. Universal dynamic structure factor of a strongly correlated Fermi gas http://link.aps.org/doi/10.1103/PhysRevA.85.023612 Author(s): Hui Hu and Xia-Ji Liu<br/><p>Universality of strongly interacting fermions is a topic of great interest in diverse fields. Here we investigate theoretically the universal dynamic density response of resonantly interacting ultracold Fermi atoms in the limit of either high temperature or large frequency. At high temperature, we u...</p><br/>[Phys. Rev. A 85, 023612] Published Thu Feb 09, 2012 Author(s): Hui Hu and Xia-Ji Liu

Universality of strongly interacting fermions is a topic of great interest in diverse fields. Here we investigate theoretically the universal dynamic density response of resonantly interacting ultracold Fermi atoms in the limit of either high temperature or large frequency. At high temperature, we u...

[Phys. Rev. A 85, 023612] Published Thu Feb 09, 2012

]]> Universal dynamic structure factor of a strongly correlated Fermi gas Hui Hu and Xia-Ji Liu 2012-02-09T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.023612 Phys. Rev. A 85, 023612 (2012) article Physical Review A 85 2 2012-02-09T10:00:00-05:00 10.1103/PhysRevA.85.023612 http://link.aps.org/doi/10.1103/PhysRevA.85.023612 023612 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Faraday waves in binary nonmiscible Bose-Einstein condensates http://link.aps.org/doi/10.1103/PhysRevA.85.023613 Author(s): Antun Balaž and Alexandru I. Nicolin<br/><p>We show by extensive numerical simulations and analytical variational calculations that elongated binary nonmiscible Bose-Einstein condensates subject to periodic modulations of the radial confinement exhibit a Faraday instability similar to that seen in one-component condensates. Considering the hy...</p><br/>[Phys. Rev. A 85, 023613] Published Thu Feb 09, 2012 Author(s): Antun Balaž and Alexandru I. Nicolin

We show by extensive numerical simulations and analytical variational calculations that elongated binary nonmiscible Bose-Einstein condensates subject to periodic modulations of the radial confinement exhibit a Faraday instability similar to that seen in one-component condensates. Considering the hy...

[Phys. Rev. A 85, 023613] Published Thu Feb 09, 2012

]]> Faraday waves in binary nonmiscible Bose-Einstein condensates Antun Balaž and Alexandru I. Nicolin 2012-02-09T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.023613 Phys. Rev. A 85, 023613 (2012) article Physical Review A 85 2 2012-02-09T10:00:00-05:00 10.1103/PhysRevA.85.023613 http://link.aps.org/doi/10.1103/PhysRevA.85.023613 023613 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Few-body bound-state stability of dipolar molecules in two dimensions http://link.aps.org/doi/10.1103/PhysRevA.85.023609 Author(s): A. G. Volosniev, D. V. Fedorov, A. S. Jensen, and N. T. Zinner<br/><p>Bound structures among dipolar molecules in multilayers are a topic of great interest in the light of recent experiments that have demonstrated the feasibility of the setup. While it is known that two molecules in two adjacent layers will always bind, larger complexes have only been scarcely address...</p><br/>[Phys. Rev. A 85, 023609] Published Wed Feb 08, 2012 Author(s): A. G. Volosniev, D. V. Fedorov, A. S. Jensen, and N. T. Zinner

Bound structures among dipolar molecules in multilayers are a topic of great interest in the light of recent experiments that have demonstrated the feasibility of the setup. While it is known that two molecules in two adjacent layers will always bind, larger complexes have only been scarcely address...

[Phys. Rev. A 85, 023609] Published Wed Feb 08, 2012

]]> Few-body bound-state stability of dipolar molecules in two dimensions A. G. Volosniev, D. V. Fedorov, A. S. Jensen, and N. T. Zinner 2012-02-08T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.023609 Phys. Rev. A 85, 023609 (2012) article Physical Review A 85 2 2012-02-08T10:00:00-05:00 10.1103/PhysRevA.85.023609 http://link.aps.org/doi/10.1103/PhysRevA.85.023609 023609 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Binding and structure of tetramers in the scaling limit http://link.aps.org/doi/10.1103/PhysRevA.85.023610 Author(s): M. R. Hadizadeh, M. T. Yamashita, Lauro Tomio, A. Delfino, and T. Frederico<br/><p>The momentum-space structure of the Faddeev-Yakubovsky (FY) components of weakly bound tetramers is investigated at the unitary limit using a renormalized zero-range two-body interaction. The results, obtained by considering a given trimer level with binding energy <span><span style="font-style: italic;">B</span><sub>3</sub></span>, provide further support to a u...</p><br/>[Phys. Rev. A 85, 023610] Published Wed Feb 08, 2012 Author(s): M. R. Hadizadeh, M. T. Yamashita, Lauro Tomio, A. Delfino, and T. Frederico

The momentum-space structure of the Faddeev-Yakubovsky (FY) components of weakly bound tetramers is investigated at the unitary limit using a renormalized zero-range two-body interaction. The results, obtained by considering a given trimer level with binding energy B3, provide further support to a u...

[Phys. Rev. A 85, 023610] Published Wed Feb 08, 2012

]]> Binding and structure of tetramers in the scaling limit M. R. Hadizadeh, M. T. Yamashita, Lauro Tomio, A. Delfino, and T. Frederico 2012-02-08T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.023610 Phys. Rev. A 85, 023610 (2012) article Physical Review A 85 2 2012-02-08T10:00:00-05:00 10.1103/PhysRevA.85.023610 http://link.aps.org/doi/10.1103/PhysRevA.85.023610 023610 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Optimal control of quantum superpositions in a bosonic Josephson junction http://link.aps.org/doi/10.1103/PhysRevA.85.023611 Author(s): M. Lapert, G. Ferrini, and D. Sugny<br/><p>We show how to optimally control the creation of quantum superpositions in a bosonic Josephson junction within the two-site Bose-Hubbard-model framework. Both geometric and purely numerical optimal-control approaches are used, the former providing a generalization of the proposal of Micheli <span style="font-style: italic;">et al.</span> [...</p><br/>[Phys. Rev. A 85, 023611] Published Wed Feb 08, 2012 Author(s): M. Lapert, G. Ferrini, and D. Sugny

We show how to optimally control the creation of quantum superpositions in a bosonic Josephson junction within the two-site Bose-Hubbard-model framework. Both geometric and purely numerical optimal-control approaches are used, the former providing a generalization of the proposal of Micheli et al. [...

[Phys. Rev. A 85, 023611] Published Wed Feb 08, 2012

]]> Optimal control of quantum superpositions in a bosonic Josephson junction M. Lapert, G. Ferrini, and D. Sugny 2012-02-08T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.023611 Phys. Rev. A 85, 023611 (2012) article Physical Review A 85 2 2012-02-08T10:00:00-05:00 10.1103/PhysRevA.85.023611 http://link.aps.org/doi/10.1103/PhysRevA.85.023611 023611 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Resonant control of polar molecules in individual sites of an optical lattice http://link.aps.org/doi/10.1103/PhysRevA.85.022703 Author(s): Thomas M. Hanna, Eite Tiesinga, William F. Mitchell, and Paul S. Julienne<br/><p>We study the resonant control of two nonreactive polar molecules in an optical lattice site, focusing on the example of RbCs. Collisional control can be achieved by tuning bound states of the intermolecular dipolar potential by varying the applied electric field or trap frequency. We consider a wide...</p><br/>[Phys. Rev. A 85, 022703] Published Wed Feb 08, 2012 Author(s): Thomas M. Hanna, Eite Tiesinga, William F. Mitchell, and Paul S. Julienne

We study the resonant control of two nonreactive polar molecules in an optical lattice site, focusing on the example of RbCs. Collisional control can be achieved by tuning bound states of the intermolecular dipolar potential by varying the applied electric field or trap frequency. We consider a wide...

[Phys. Rev. A 85, 022703] Published Wed Feb 08, 2012

]]> Resonant control of polar molecules in individual sites of an optical lattice Thomas M. Hanna, Eite Tiesinga, William F. Mitchell, and Paul S. Julienne 2012-02-08T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.022703 Phys. Rev. A 85, 022703 (2012) article Physical Review A 85 2 2012-02-08T10:00:00-05:00 10.1103/PhysRevA.85.022703 http://link.aps.org/doi/10.1103/PhysRevA.85.022703 022703 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions Number-phase Wigner representation for scalable stochastic simulations of controlled quantum systems http://link.aps.org/doi/10.1103/PhysRevA.85.023607 Author(s): M. R. Hush, A. R. R. Carvalho, and J. J. Hope<br/><p>Simulation of conditional master equations is important to describe systems under continuous measurement and for the design of control strategies in quantum systems. For large bosonic systems, such as Bose-Einstein condensates and atom lasers, full quantum-field simulations must rely on scalable sto...</p><br/>[Phys. Rev. A 85, 023607] Published Tue Feb 07, 2012 Author(s): M. R. Hush, A. R. R. Carvalho, and J. J. Hope

Simulation of conditional master equations is important to describe systems under continuous measurement and for the design of control strategies in quantum systems. For large bosonic systems, such as Bose-Einstein condensates and atom lasers, full quantum-field simulations must rely on scalable sto...

[Phys. Rev. A 85, 023607] Published Tue Feb 07, 2012

]]> Number-phase Wigner representation for scalable stochastic simulations of controlled quantum systems M. R. Hush, A. R. R. Carvalho, and J. J. Hope 2012-02-07T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.023607 Phys. Rev. A 85, 023607 (2012) article Physical Review A 85 2 2012-02-07T10:00:00-05:00 10.1103/PhysRevA.85.023607 http://link.aps.org/doi/10.1103/PhysRevA.85.023607 023607 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Fermi polarons in two dimensions http://link.aps.org/doi/10.1103/PhysRevA.85.021602 Author(s): Richard Schmidt, Tilman Enss, Ville Pietilä, and Eugene Demler<br/><p>We theoretically analyze inverse radio-frequency (rf) spectroscopy experiments in two-component Fermi gases. We consider a small number of impurity atoms interacting strongly with a bath of majority atoms. In two-dimensional geometries we find that the main features of the rf spectrum correspond to ...</p><br/><img src="http://publish.aps.org/images/icons/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/> <br/>[Phys. Rev. A 85, 021602] Published Tue Feb 07, 2012 Author(s): Richard Schmidt, Tilman Enss, Ville Pietilä, and Eugene Demler

Rapid Communication We theoretically analyze inverse radio-frequency (rf) spectroscopy experiments in two-component Fermi gases. We consider a small number of impurity atoms interacting strongly with a bath of majority atoms. In two-dimensional geometries we find that the main features of the rf spectrum correspond to ...

[Phys. Rev. A 85, 021602] Published Tue Feb 07, 2012

]]> Fermi polarons in two dimensions Richard Schmidt, Tilman Enss, Ville Pietilä, and Eugene Demler 2012-02-07T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.021602 Phys. Rev. A 85, 021602 (2012) article Physical Review A 85 2 2012-02-07T10:00:00-05:00 10.1103/PhysRevA.85.021602 http://link.aps.org/doi/10.1103/PhysRevA.85.021602 021602 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Phase diagram of Landau-Zener phenomena in coupled one-dimensional Bose quantum fluids http://link.aps.org/doi/10.1103/PhysRevA.85.023605 Author(s): Santiago F. Caballero-Benítez and Rosario Paredes<br/><p>We study stationary and dynamical properties of the many-body Landau-Zener dynamics of a Bose quantum fluid confined in two coupled one-dimensional chains by using a many-body generalization recently reported Chen <span style="font-style: italic;">et al.</span> [ <a href="http://dx.doi.org/10.1038/nphys1801"> Nature Phys. <span style="font-weight: bold;">7</span> 61 (2011)</a>], within the decoupling approximation and the one-l...</p><br/>[Phys. Rev. A 85, 023605] Published Mon Feb 06, 2012 Author(s): Santiago F. Caballero-Benítez and Rosario Paredes

We study stationary and dynamical properties of the many-body Landau-Zener dynamics of a Bose quantum fluid confined in two coupled one-dimensional chains by using a many-body generalization recently reported Chen et al. [ Nature Phys. 7 61 (2011)], within the decoupling approximation and the one-l...

[Phys. Rev. A 85, 023605] Published Mon Feb 06, 2012

]]> Phase diagram of Landau-Zener phenomena in coupled one-dimensional Bose quantum fluids Santiago F. Caballero-Benítez and Rosario Paredes 2012-02-06T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.023605 Phys. Rev. A 85, 023605 (2012) article Physical Review A 85 2 2012-02-06T10:00:00-05:00 10.1103/PhysRevA.85.023605 http://link.aps.org/doi/10.1103/PhysRevA.85.023605 023605 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Half-quantum vortex state in a spin-orbit-coupled Bose-Einstein condensate http://link.aps.org/doi/10.1103/PhysRevA.85.023606 Author(s): B. Ramachandhran, Bogdan Opanchuk, Xia-Ji Liu, Han Pu, Peter D. Drummond, and Hui Hu<br/><p>We theoretically investigate the condensate state and collective excitations of a two-component Bose gas in a two-dimensional harmonic trap subject to isotropic Rashba spin-orbit coupling. In the weakly interacting regime when the interspecies interaction is larger than the intraspecies interaction ...</p><br/>[Phys. Rev. A 85, 023606] Published Mon Feb 06, 2012 Author(s): B. Ramachandhran, Bogdan Opanchuk, Xia-Ji Liu, Han Pu, Peter D. Drummond, and Hui Hu

We theoretically investigate the condensate state and collective excitations of a two-component Bose gas in a two-dimensional harmonic trap subject to isotropic Rashba spin-orbit coupling. In the weakly interacting regime when the interspecies interaction is larger than the intraspecies interaction ...

[Phys. Rev. A 85, 023606] Published Mon Feb 06, 2012

]]> Half-quantum vortex state in a spin-orbit-coupled Bose-Einstein condensate B. Ramachandhran, Bogdan Opanchuk, Xia-Ji Liu, Han Pu, Peter D. Drummond, and Hui Hu 2012-02-06T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.023606 Phys. Rev. A 85, 023606 (2012) article Physical Review A 85 2 2012-02-06T10:00:00-05:00 10.1103/PhysRevA.85.023606 http://link.aps.org/doi/10.1103/PhysRevA.85.023606 023606 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules High-fidelity quantum gates in the presence of dispersion http://link.aps.org/doi/10.1103/PhysRevA.85.022306 Author(s): B. Khani, S. T. Merkel, F. Motzoi, Jay M. Gambetta, and F. K. Wilhelm<br/><p>We numerically demonstrate the control of motional degrees of freedom of an ensemble of neutral atoms in an optical lattice with a shallow trapping potential. Taking into account the range of quasimomenta across different Brillouin zones results in an ensemble whose members effectively have inhomoge...</p><br/>[Phys. Rev. A 85, 022306] Published Mon Feb 06, 2012 Author(s): B. Khani, S. T. Merkel, F. Motzoi, Jay M. Gambetta, and F. K. Wilhelm

We numerically demonstrate the control of motional degrees of freedom of an ensemble of neutral atoms in an optical lattice with a shallow trapping potential. Taking into account the range of quasimomenta across different Brillouin zones results in an ensemble whose members effectively have inhomoge...

[Phys. Rev. A 85, 022306] Published Mon Feb 06, 2012

]]> High-fidelity quantum gates in the presence of dispersion B. Khani, S. T. Merkel, F. Motzoi, Jay M. Gambetta, and F. K. Wilhelm 2012-02-06T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.022306 Phys. Rev. A 85, 022306 (2012) article Physical Review A 85 2 2012-02-06T10:00:00-05:00 10.1103/PhysRevA.85.022306 http://link.aps.org/doi/10.1103/PhysRevA.85.022306 022306 Quantum information Quantum information Dissipation-induced squeezing http://link.aps.org/doi/10.1103/PhysRevA.85.023604 Author(s): Gentaro Watanabe and Harri Mäkelä<br/><p>We present a method for phase and number squeezing in two-mode Bose systems using dissipation. The effectiveness of this method is demonstrated by considering cold Bose gases trapped in a double-well potential. The extension of our formalism to an optical lattice gives control of the phase boundarie...</p><br/>[Phys. Rev. A 85, 023604] Published Mon Feb 06, 2012 Author(s): Gentaro Watanabe and Harri Mäkelä

We present a method for phase and number squeezing in two-mode Bose systems using dissipation. The effectiveness of this method is demonstrated by considering cold Bose gases trapped in a double-well potential. The extension of our formalism to an optical lattice gives control of the phase boundarie...

[Phys. Rev. A 85, 023604] Published Mon Feb 06, 2012

]]> Dissipation-induced squeezing Gentaro Watanabe and Harri Mäkelä 2012-02-06T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.023604 Phys. Rev. A 85, 023604 (2012) article Physical Review A 85 2 2012-02-06T10:00:00-05:00 10.1103/PhysRevA.85.023604 http://link.aps.org/doi/10.1103/PhysRevA.85.023604 023604 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Bose-Einstein condensates in a ring-shaped trap with a nonlinear double-well potential http://link.aps.org/doi/10.1103/PhysRevA.85.023603 Author(s): Xiang-Fa Zhou, Shao-Liang Zhang, Zheng-Wei Zhou, Boris A. Malomed, and Han Pu<br/><p>We develop the mean-field theory for Bose-Einstein condensates in a one-dimensional ring with two types of nonlinear double-well potentials, based on a pair of <span><span style="font-style: italic;">δ</span></span> functions or Gaussian of a finite width, placed at diametrically opposite points. By analyzing the ground states (GSs) in these cases, we ...</p><br/>[Phys. Rev. A 85, 023603] Published Fri Feb 03, 2012 Author(s): Xiang-Fa Zhou, Shao-Liang Zhang, Zheng-Wei Zhou, Boris A. Malomed, and Han Pu

We develop the mean-field theory for Bose-Einstein condensates in a one-dimensional ring with two types of nonlinear double-well potentials, based on a pair of δ functions or Gaussian of a finite width, placed at diametrically opposite points. By analyzing the ground states (GSs) in these cases, we ...

[Phys. Rev. A 85, 023603] Published Fri Feb 03, 2012

]]> Bose-Einstein condensates in a ring-shaped trap with a nonlinear double-well potential Xiang-Fa Zhou, Shao-Liang Zhang, Zheng-Wei Zhou, Boris A. Malomed, and Han Pu 2012-02-03T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.023603 Phys. Rev. A 85, 023603 (2012) article Physical Review A 85 2 2012-02-03T10:00:00-05:00 10.1103/PhysRevA.85.023603 http://link.aps.org/doi/10.1103/PhysRevA.85.023603 023603 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Dipolar bosons in triangular optical lattices: Quantum phase transitions and anomalous hysteresis http://link.aps.org/doi/10.1103/PhysRevA.85.021601 Author(s): Daisuke Yamamoto, Ippei Danshita, and Carlos A. R. Sá de Melo<br/><p>We study phase transitions and hysteresis in a system of dipolar bosons loaded into triangular optical lattices at zero temperature. We find that the quantum melting transition from supersolid to superfluid phase is first order, in contrast with the previous report. We also find that due to strong q...</p><br/><img src="http://publish.aps.org/images/icons/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/> <br/>[Phys. Rev. A 85, 021601] Published Fri Feb 03, 2012 Author(s): Daisuke Yamamoto, Ippei Danshita, and Carlos A. R. Sá de Melo

Rapid Communication We study phase transitions and hysteresis in a system of dipolar bosons loaded into triangular optical lattices at zero temperature. We find that the quantum melting transition from supersolid to superfluid phase is first order, in contrast with the previous report. We also find that due to strong q...

[Phys. Rev. A 85, 021601] Published Fri Feb 03, 2012

]]> Dipolar bosons in triangular optical lattices: Quantum phase transitions and anomalous hysteresis Daisuke Yamamoto, Ippei Danshita, and Carlos A. R. Sá de Melo 2012-02-03T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.021601 Phys. Rev. A 85, 021601 (2012) article Physical Review A 85 2 2012-02-03T10:00:00-05:00 10.1103/PhysRevA.85.021601 http://link.aps.org/doi/10.1103/PhysRevA.85.021601 021601 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Amplitude control of quantum interference http://link.aps.org/doi/10.1103/PhysRevA.85.023602 Author(s): W. J. Mullin and F. Laloë<br/><p>Usually, the oscillations of interference effects are controlled by relative phases. We show that varying the amplitudes of quantum waves, for instance by changing the reflectivity of beam splitters, can also lead to quantum oscillations and even to Bell violations of local realism. We first study t...</p><br/>[Phys. Rev. A 85, 023602] Published Thu Feb 02, 2012 Author(s): W. J. Mullin and F. Laloë

Usually, the oscillations of interference effects are controlled by relative phases. We show that varying the amplitudes of quantum waves, for instance by changing the reflectivity of beam splitters, can also lead to quantum oscillations and even to Bell violations of local realism. We first study t...

[Phys. Rev. A 85, 023602] Published Thu Feb 02, 2012

]]> Amplitude control of quantum interference W. J. Mullin and F. Laloë 2012-02-02T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.023602 Phys. Rev. A 85, 023602 (2012) article Physical Review A 85 2 2012-02-02T10:00:00-05:00 10.1103/PhysRevA.85.023602 http://link.aps.org/doi/10.1103/PhysRevA.85.023602 023602 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Supercircle description of universal three-body states in two dimensions http://link.aps.org/doi/10.1103/PhysRevA.85.025601 Author(s): F. F. Bellotti, T. Frederico, M. T. Yamashita, D. V. Fedorov, A. S. Jensen, and N. T. Zinner<br/><p>Bound states of asymmetric three-body systems confined to two dimensions are currently unknown. In the universal regime, two energy ratios and two mass ratios provide complete knowledge of the three-body energy measured in units of one two-body energy. We compute the three-body energy for general sy...</p><br/>[Phys. Rev. A 85, 025601] Published Thu Feb 02, 2012 Author(s): F. F. Bellotti, T. Frederico, M. T. Yamashita, D. V. Fedorov, A. S. Jensen, and N. T. Zinner

Bound states of asymmetric three-body systems confined to two dimensions are currently unknown. In the universal regime, two energy ratios and two mass ratios provide complete knowledge of the three-body energy measured in units of one two-body energy. We compute the three-body energy for general sy...

[Phys. Rev. A 85, 025601] Published Thu Feb 02, 2012

]]> Supercircle description of universal three-body states in two dimensions F. F. Bellotti, T. Frederico, M. T. Yamashita, D. V. Fedorov, A. S. Jensen, and N. T. Zinner 2012-02-02T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.025601 Phys. Rev. A 85, 025601 (2012) article Physical Review A 85 2 2012-02-02T10:00:00-05:00 10.1103/PhysRevA.85.025601 http://link.aps.org/doi/10.1103/PhysRevA.85.025601 025601 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Controlled creation of spin domains in spin-1 Bose-Einstein condensates by phase separation http://link.aps.org/doi/10.1103/PhysRevA.85.023601 Author(s): Tomasz Świsłocki and Michał Matuszewski<br/><p>A method of controlled creation of spin domains in spin-1 antiferromagnetic Bose-Einstein condensates is demonstrated. The method exploits the phenomenon of phase separation of spin components in an external potential. By using an appropriate time-dependent potential, a composition of spin domains c...</p><br/>[Phys. Rev. A 85, 023601] Published Wed Feb 01, 2012 Author(s): Tomasz Świsłocki and Michał Matuszewski

A method of controlled creation of spin domains in spin-1 antiferromagnetic Bose-Einstein condensates is demonstrated. The method exploits the phenomenon of phase separation of spin components in an external potential. By using an appropriate time-dependent potential, a composition of spin domains c...

[Phys. Rev. A 85, 023601] Published Wed Feb 01, 2012

]]> Controlled creation of spin domains in spin-1 Bose-Einstein condensates by phase separation Tomasz Świsłocki and Michał Matuszewski 2012-02-01T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.023601 Phys. Rev. A 85, 023601 (2012) article Physical Review A 85 2 2012-02-01T10:00:00-05:00 10.1103/PhysRevA.85.023601 http://link.aps.org/doi/10.1103/PhysRevA.85.023601 023601 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Density-wave–supersolid and Mott-insulator–superfluid transitions in the presence of an artificial gauge field: A strong-coupling perturbation approach http://link.aps.org/doi/10.1103/PhysRevA.85.013642 Author(s): Rashi Sachdeva and Sankalpa Ghosh<br/><p>We study the effect of an artificial gauge field on the zero-temperature phase diagram of an extended Bose-Hubbard model that describes ultracold atoms in optical lattices with long-range interactions by using strong-coupling perturbation theory. We determine analytically the effect of the artificia...</p><br/>[Phys. Rev. A 85, 013642] Published Tue Jan 31, 2012 Author(s): Rashi Sachdeva and Sankalpa Ghosh

We study the effect of an artificial gauge field on the zero-temperature phase diagram of an extended Bose-Hubbard model that describes ultracold atoms in optical lattices with long-range interactions by using strong-coupling perturbation theory. We determine analytically the effect of the artificia...

[Phys. Rev. A 85, 013642] Published Tue Jan 31, 2012

]]> Density-wave–supersolid and Mott-insulator–superfluid transitions in the presence of an artificial gauge field: A strong-coupling perturbation approach Rashi Sachdeva and Sankalpa Ghosh 2012-01-31T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.013642 Phys. Rev. A 85, 013642 (2012) article Physical Review A 85 1 2012-01-31T10:00:00-05:00 10.1103/PhysRevA.85.013642 http://link.aps.org/doi/10.1103/PhysRevA.85.013642 013642 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Rubidium-87 Bose-Einstein condensate in an optically plugged quadrupole trap http://link.aps.org/doi/10.1103/PhysRevA.85.013643 Author(s): R. Dubessy, K. Merloti, L. Longchambon, P.-E. Pottie, T. Liennard, A. Perrin, V. Lorent, and H. Perrin<br/><p>We describe an experiment to produce <span><sup>87</sup></span>Rb Bose-Einstein condensates in an optically plugged magnetic quadrupole trap, using a blue-detuned laser. Due to the large detuning of the plug laser with respect to the atomic transition, the evaporation has to be carefully optimized in order to efficiently o...</p><br/>[Phys. Rev. A 85, 013643] Published Tue Jan 31, 2012 Author(s): R. Dubessy, K. Merloti, L. Longchambon, P.-E. Pottie, T. Liennard, A. Perrin, V. Lorent, and H. Perrin

We describe an experiment to produce 87Rb Bose-Einstein condensates in an optically plugged magnetic quadrupole trap, using a blue-detuned laser. Due to the large detuning of the plug laser with respect to the atomic transition, the evaporation has to be carefully optimized in order to efficiently o...

[Phys. Rev. A 85, 013643] Published Tue Jan 31, 2012

]]> Rubidium-87 Bose-Einstein condensate in an optically plugged quadrupole trap R. Dubessy, K. Merloti, L. Longchambon, P.-E. Pottie, T. Liennard, A. Perrin, V. Lorent, and H. Perrin 2012-01-31T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.013643 Phys. Rev. A 85, 013643 (2012) article Physical Review A 85 1 2012-01-31T10:00:00-05:00 10.1103/PhysRevA.85.013643 http://link.aps.org/doi/10.1103/PhysRevA.85.013643 013643 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Quench-induced Mott-insulator-to-superfluid quantum phase transition http://link.aps.org/doi/10.1103/PhysRevA.85.013644 Author(s): Jay D. Sau, Bin Wang, and S. Das Sarma<br/><p>Mott-insulator-to-superfluid quenches have been used by recent experiments to generate exotic superfluid phases. While the final Hamiltonian following the sudden quench is that of a superfluid, it is not <span style="font-style: italic;">a priori</span> clear whether the final state of the system actually enters the superfluid phase. To un...</p><br/>[Phys. Rev. A 85, 013644] Published Tue Jan 31, 2012 Author(s): Jay D. Sau, Bin Wang, and S. Das Sarma

Mott-insulator-to-superfluid quenches have been used by recent experiments to generate exotic superfluid phases. While the final Hamiltonian following the sudden quench is that of a superfluid, it is not a priori clear whether the final state of the system actually enters the superfluid phase. To un...

[Phys. Rev. A 85, 013644] Published Tue Jan 31, 2012

]]> Quench-induced Mott-insulator-to-superfluid quantum phase transition Jay D. Sau, Bin Wang, and S. Das Sarma 2012-01-31T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.013644 Phys. Rev. A 85, 013644 (2012) article Physical Review A 85 1 2012-01-31T10:00:00-05:00 10.1103/PhysRevA.85.013644 http://link.aps.org/doi/10.1103/PhysRevA.85.013644 013644 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Quantum phase transition of two-mode Bose-Einstein condensates with an entanglement order parameter http://link.aps.org/doi/10.1103/PhysRevA.85.013645 Author(s): Wei Fan, Yan Xu, Bing Chen, Zhaoyang Chen, Xunli Feng, and C. H. Oh<br/><p>The ground-state entanglement of the two-mode Bose-Einstein condensate is investigated through a quantum-phase-transition approach. The entanglement measure is taken as the order parameter and this is a nonlocal order parameter, which is different from the conventional order parameter of the Mott-in...</p><br/>[Phys. Rev. A 85, 013645] Published Tue Jan 31, 2012 Author(s): Wei Fan, Yan Xu, Bing Chen, Zhaoyang Chen, Xunli Feng, and C. H. Oh

The ground-state entanglement of the two-mode Bose-Einstein condensate is investigated through a quantum-phase-transition approach. The entanglement measure is taken as the order parameter and this is a nonlocal order parameter, which is different from the conventional order parameter of the Mott-in...

[Phys. Rev. A 85, 013645] Published Tue Jan 31, 2012

]]> Quantum phase transition of two-mode Bose-Einstein condensates with an entanglement order parameter Wei Fan, Yan Xu, Bing Chen, Zhaoyang Chen, Xunli Feng, and C. H. Oh 2012-01-31T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.013645 Phys. Rev. A 85, 013645 (2012) article Physical Review A 85 1 2012-01-31T10:00:00-05:00 10.1103/PhysRevA.85.013645 http://link.aps.org/doi/10.1103/PhysRevA.85.013645 013645 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Fermi gas with attractive potential and arbitrary spin in a one-dimensional trap: Phase diagram for S=3/2, 5/2, 7/2, and 9/2 http://link.aps.org/doi/10.1103/PhysRevB.85.024535 Author(s): P. Schlottmann and A. A. Zvyagin<br/><p>A gas of ultracold <span><sup>6</sup></span>Li atoms (effective spin 1/2) confined to an elongated trap with one-dimensional properties is a candidate to display three different phases: (i) fermions bound in Cooper-pair-like states, (ii) unbound spin-polarized particles, and (iii) a mixed phase in which Cooper bound states...</p><br/>[Phys. Rev. B 85, 024535] Published Mon Jan 30, 2012 Author(s): P. Schlottmann and A. A. Zvyagin

A gas of ultracold 6Li atoms (effective spin 1/2) confined to an elongated trap with one-dimensional properties is a candidate to display three different phases: (i) fermions bound in Cooper-pair-like states, (ii) unbound spin-polarized particles, and (iii) a mixed phase in which Cooper bound states...

[Phys. Rev. B 85, 024535] Published Mon Jan 30, 2012

]]> Fermi gas with attractive potential and arbitrary spin in a one-dimensional trap: Phase diagram for S=3/2, 5/2, 7/2, and 9/2 P. Schlottmann and A. A. Zvyagin 2012-01-30T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevB.85.024535 Phys. Rev. B 85, 024535 (2012) article Physical Review B 85 2 2012-01-30T10:00:00-05:00 10.1103/PhysRevB.85.024535 http://link.aps.org/doi/10.1103/PhysRevB.85.024535 024535 Superfluidity and superconductivity Superfluidity and superconductivity Lattice approaches to dilute Fermi gases: Legacy of broken Galilean invariance http://link.aps.org/doi/10.1103/PhysRevA.85.013640 Author(s): A. Privitera and M. Capone<br/><p>In the dilute limit, the properties of fermionic lattice models with short-range attractive interactions converge to those of a dilute Fermi gas in continuum space. We investigate this connection using mean-field theory, and we show that the existence of finite lattice spacing has consequences down ...</p><br/>[Phys. Rev. A 85, 013640] Published Mon Jan 30, 2012 Author(s): A. Privitera and M. Capone

In the dilute limit, the properties of fermionic lattice models with short-range attractive interactions converge to those of a dilute Fermi gas in continuum space. We investigate this connection using mean-field theory, and we show that the existence of finite lattice spacing has consequences down ...

[Phys. Rev. A 85, 013640] Published Mon Jan 30, 2012

]]> Lattice approaches to dilute Fermi gases: Legacy of broken Galilean invariance A. Privitera and M. Capone 2012-01-30T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.013640 Phys. Rev. A 85, 013640 (2012) article Physical Review A 85 1 2012-01-30T10:00:00-05:00 10.1103/PhysRevA.85.013640 http://link.aps.org/doi/10.1103/PhysRevA.85.013640 013640 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Dispersion and wave-function symmetry in cold atoms experiencing artificial gauge fields http://link.aps.org/doi/10.1103/PhysRevA.85.013641 Author(s): Yariv Yanay and Erich Mueller<br/><p>We analyze the single-particle quantum mechanics of an atom whose dispersion is modified by spin-orbit coupling to Raman lasers. Such a setup can create a double-well-shaped dispersion, which leads to unusual single-particle physics. We show how this dispersion influences the symmetry of the ground-...</p><br/>[Phys. Rev. A 85, 013641] Published Mon Jan 30, 2012 Author(s): Yariv Yanay and Erich Mueller

We analyze the single-particle quantum mechanics of an atom whose dispersion is modified by spin-orbit coupling to Raman lasers. Such a setup can create a double-well-shaped dispersion, which leads to unusual single-particle physics. We show how this dispersion influences the symmetry of the ground-...

[Phys. Rev. A 85, 013641] Published Mon Jan 30, 2012

]]> Dispersion and wave-function symmetry in cold atoms experiencing artificial gauge fields Yariv Yanay and Erich Mueller 2012-01-30T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.013641 Phys. Rev. A 85, 013641 (2012) article Physical Review A 85 1 2012-01-30T10:00:00-05:00 10.1103/PhysRevA.85.013641 http://link.aps.org/doi/10.1103/PhysRevA.85.013641 013641 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Strong thermalization of the two-component Bose-Hubbard model at finite temperatures http://link.aps.org/doi/10.1103/PhysRevA.85.013637 Author(s): J. M. Zhang, C. Shen, and W. M. Liu<br/><p>We study thermalization of a two-component Bose-Hubbard model by exact diagonalization. Initially, the two components do not interact and are both at equilibrium but with different temperatures. As the onsite intercomponent interaction is turned on, perfect thermalization occurs. Remarkably, not mer...</p><br/>[Phys. Rev. A 85, 013637] Published Fri Jan 27, 2012 Author(s): J. M. Zhang, C. Shen, and W. M. Liu

We study thermalization of a two-component Bose-Hubbard model by exact diagonalization. Initially, the two components do not interact and are both at equilibrium but with different temperatures. As the onsite intercomponent interaction is turned on, perfect thermalization occurs. Remarkably, not mer...

[Phys. Rev. A 85, 013637] Published Fri Jan 27, 2012

]]> Strong thermalization of the two-component Bose-Hubbard model at finite temperatures J. M. Zhang, C. Shen, and W. M. Liu 2012-01-27T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.013637 Phys. Rev. A 85, 013637 (2012) article Physical Review A 85 1 2012-01-27T10:00:00-05:00 10.1103/PhysRevA.85.013637 http://link.aps.org/doi/10.1103/PhysRevA.85.013637 013637 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Simulating Z_{2} topological insulators with cold atoms in a one-dimensional optical lattice http://link.aps.org/doi/10.1103/PhysRevA.85.013638 Author(s): Feng Mei, Shi-Liang Zhu, Zhi-Ming Zhang, C. H. Oh, and N. Goldman<br/><p>We propose an experimental scheme to simulate and detect the properties of time-reversal invariant topological insulators, using cold atoms trapped in one-dimensional bichromatic optical lattices. This system is described by a one-dimensional Aubry-Andre model with an additional SU(2) gauge structur...</p><br/>[Phys. Rev. A 85, 013638] Published Fri Jan 27, 2012 Author(s): Feng Mei, Shi-Liang Zhu, Zhi-Ming Zhang, C. H. Oh, and N. Goldman

We propose an experimental scheme to simulate and detect the properties of time-reversal invariant topological insulators, using cold atoms trapped in one-dimensional bichromatic optical lattices. This system is described by a one-dimensional Aubry-Andre model with an additional SU(2) gauge structur...

[Phys. Rev. A 85, 013638] Published Fri Jan 27, 2012

]]> Simulating Z_{2} topological insulators with cold atoms in a one-dimensional optical lattice Feng Mei, Shi-Liang Zhu, Zhi-Ming Zhang, C. H. Oh, and N. Goldman 2012-01-27T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.013638 Phys. Rev. A 85, 013638 (2012) article Physical Review A 85 1 2012-01-27T10:00:00-05:00 10.1103/PhysRevA.85.013638 http://link.aps.org/doi/10.1103/PhysRevA.85.013638 013638 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Signatures of single-site addressability in resonance fluorescence spectra http://link.aps.org/doi/10.1103/PhysRevA.85.013842 Author(s): Peter Degenfeld-Schonburg, Elena del Valle, and Michael J. Hartmann<br/><p>Pioneering methods in recent optical-lattice experiments allow focusing laser beams down to a spot size that is comparable to the lattice constant. Inspired by this achievement, we examine the resonance fluorescence spectra of two-level atoms positioned in adjacent lattice sites and compare the case...</p><br/>[Phys. Rev. A 85, 013842] Published Fri Jan 27, 2012 Author(s): Peter Degenfeld-Schonburg, Elena del Valle, and Michael J. Hartmann

Pioneering methods in recent optical-lattice experiments allow focusing laser beams down to a spot size that is comparable to the lattice constant. Inspired by this achievement, we examine the resonance fluorescence spectra of two-level atoms positioned in adjacent lattice sites and compare the case...

[Phys. Rev. A 85, 013842] Published Fri Jan 27, 2012

]]> Signatures of single-site addressability in resonance fluorescence spectra Peter Degenfeld-Schonburg, Elena del Valle, and Michael J. Hartmann 2012-01-27T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.013842 Phys. Rev. A 85, 013842 (2012) article Physical Review A 85 1 2012-01-27T10:00:00-05:00 10.1103/PhysRevA.85.013842 http://link.aps.org/doi/10.1103/PhysRevA.85.013842 013842 Quantum optics, physics of lasers, nonlinear optics, classical optics Quantum optics, physics of lasers, nonlinear optics, classical optics Local gravity measurement with the combination of atom interferometry and Bloch oscillations http://link.aps.org/doi/10.1103/PhysRevA.85.013639 Author(s): Renée Charrière, Malo Cadoret, Nassim Zahzam, Yannick Bidel, and Alexandre Bresson<br/><p>We present a local measurement of gravity combining Bloch oscillations and atom interferometry. With a falling distance of 0.8 mm, we achieve a sensitivity of <span>2×10<sup>−7</sup> g</span> with an integration time of 300 s. No bias associated with the Bloch oscillations has been measured. A contrast decay with Bloch osc...</p><br/>[Phys. Rev. A 85, 013639] Published Fri Jan 27, 2012 Author(s): Renée Charrière, Malo Cadoret, Nassim Zahzam, Yannick Bidel, and Alexandre Bresson

We present a local measurement of gravity combining Bloch oscillations and atom interferometry. With a falling distance of 0.8 mm, we achieve a sensitivity of 2×10−7 g with an integration time of 300 s. No bias associated with the Bloch oscillations has been measured. A contrast decay with Bloch osc...

[Phys. Rev. A 85, 013639] Published Fri Jan 27, 2012

]]> Local gravity measurement with the combination of atom interferometry and Bloch oscillations Renée Charrière, Malo Cadoret, Nassim Zahzam, Yannick Bidel, and Alexandre Bresson 2012-01-27T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.013639 Phys. Rev. A 85, 013639 (2012) article Physical Review A 85 1 2012-01-27T10:00:00-05:00 10.1103/PhysRevA.85.013639 http://link.aps.org/doi/10.1103/PhysRevA.85.013639 013639 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules Evolution from BCS to BEC superfluidity in the presence of spin-orbit coupling http://link.aps.org/doi/10.1103/PhysRevA.85.011606 Author(s): Li Han and C. A. R. Sá de Melo<br/><p>We discuss the evolution from BCS to Bose-Einstein condensate (BEC) superfluids in the presence of spin-orbit coupling for a balanced mixture of ultracold fermions. The dependence of several thermodynamic properties, such as chemical potential, order parameter, pressure, entropy, isothermal compress...</p><br/><img src="http://publish.aps.org/images/icons/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/> <br/>[Phys. Rev. A 85, 011606] Published Fri Jan 27, 2012 Author(s): Li Han and C. A. R. Sá de Melo

Rapid Communication We discuss the evolution from BCS to Bose-Einstein condensate (BEC) superfluids in the presence of spin-orbit coupling for a balanced mixture of ultracold fermions. The dependence of several thermodynamic properties, such as chemical potential, order parameter, pressure, entropy, isothermal compress...

[Phys. Rev. A 85, 011606] Published Fri Jan 27, 2012

]]> Evolution from BCS to BEC superfluidity in the presence of spin-orbit coupling Li Han and C. A. R. Sá de Melo 2012-01-27T10:00:00-05:00 Personal use only, all commercial or other reuse prohibited doi:10.1103/PhysRevA.85.011606 Phys. Rev. A 85, 011606 (2012) article Physical Review A 85 1 2012-01-27T10:00:00-05:00 10.1103/PhysRevA.85.011606 http://link.aps.org/doi/10.1103/PhysRevA.85.011606 011606 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules