2017

= Spring 2017 =

= // Meet on every // Wednesday 7pm Pittsburgh time ( Thur. 8am Beijing time ) // unless noted otherwise. // =


 * Jan 4, X ** **uguang Yue****, Wednesday 7 :00 pm pitt time ( Jan 5, 8:00 am Beijing time) **

A Superradiant Topological Peierls Insulator inside an Optical Cavity F. Mivehvar, H. Ritsch, and F. Piazza, arXiv:1611.04876

** Jan 11, ****Biao Huang****, Wednesday 7 :00 pm pitt time ( Jan 12, 8:00 am Beijing time) ** Experiment for Interacting Hofstadter Model Ref: M. Eric Tai et. al. (M. Greiner’s group), arxiv: 1612.05631

Practical device-independent quantum key distribution
 * Jan 18, Yonggang Tan ****, Wednesday 7 :00 pm pitt time ( Jan 19, 8:00 am Beijing time) **

Semisynthetic zigzag optical lattice for ultracold bosons, arxiv: 1610.00709 (2016)
 * Jan 25, **** Ahmet Keles ****, Wednesday 7 :00 pm pitt time ( Jan 26, 8:00 am Beijing time)  **

Quantum effect in frustrated zigzag chain
 * Feb 1, Haiyuan Zou ****, Wednesday 7 :00 pm pitt time ( Feb 2, 8:00 am Beijing time)  **

Measuring Topological Number of a Chern-Insulator from Quench Dynamics H. Zhai group, including Jinlong arXiv:1611.03304
 * Feb 8, **** Max Arzamasovs ****, Wednesday 7 :00 pm pitt time ( Feb 9, 8:00 am Beijing time) **

Quasiparticle excitations in a strongly interacting BEC S. Papp, et al., Phys. Rev. Lett. 101, 135301 (2008) R. Lopes, et al., arXiv:1702.02935
 * Feb 15, X ** **uguang Yue****, Wednesday 7 :00 pm pitt time ( Feb 16, 8:00 am Beijing time) **

Topological Hopf Insulators Joel Moore, Ying Ran, Xiao-Gang Wen, “Topological Surface States in Three-Dimensional Magnetic Insulators”, PRL 101, 186805 (2008)
 * Feb 22, Biao Huang ** **, Wednesday 7 :00 pm pitt time ( Feb 23, 8:00 am Beijing time) **

Observation of a non-Abelian Yang Monopole: From New Chern Numbers to a Topological Transition S. Sugawa, F. Salces-Carcoba, A. R. Perry, Y. Yue and I. B. Spielman arXiv:1610.06228 (2016)
 * Mar 1, **** Ahmet Keles ****, Wednesday 7 :00 pm pitt time ( Mar 2, 8:00 am Beijing time) **

Vortex-core structure in a mixture of Bose and Fermi superfuids
 * Mar 8, Jian-song Pan ****, Wednesday 7 :00 pm pitt time ( Mar 9, 8:00 am Beijing time) **


 * (US Time Changes) **


 * Mar 15 (Skipped due to March meeting) **

Confinement in a 1D quenched system Ref:M Kormos, M Collura, G Takacs, and P Calabrese Nature Physics 13, 246 (2017)
 * Mar 22, **** Haiyuan Zou ****, Wednesday 8 :00 pm pitt time ( Mar 23, 8:00 am Beijing time) **

Majorana Zero Modes Protected by Hopf Invariant in Topologically Trivial Superconductors Z. Yan, R. Bi, Z. Wang, arXiv:1701.02558v2
 * Mar 29, **** Max Arzamasovs ****, Wednesday 8 :00 pm pitt time ( Mar 30, 8:00 am Beijing time) **

Designer curved-space geometry for Weyl metamaterials arxiv: 1703.10408, A. Westrom and T. Ojanen
 * Apr 5, **** Biao Huang ****, Wednesday 8 :00 pm pitt time ( Apr 6, 8:00 am Beijing time) **

Emergent eigenstate solution and emergent Gibbs ensemble for expansion dynamics in optical lattices L. Vidmar, W. Xu, and M. Rigol, et al., arXiv:1704.01125
 * Apr 12, Xuguang Yue ** **, Wednesday 8 :00 pm pitt time ( Apr 13, 8:00 am Beijing time) **

Lattice like symmetries in time for periodically time dependent systems
 * Apr 19, **** Ahmet Keles ****, Wednesday 8 :00 pm pitt time ( Apr 20, 8:00 am Beijing time) **

(The talk is shifted for the PQI events on Wednesday, []) Higgs and Goldstone modes in a supersolid quantum gas. Ref: J Leonard, A morales, P Zupancic, T Donner and T Esslinger, arXiv: 1704.05803
 * Apr 25, **** Haiyuan Zou ****, Tuesday 8 :00 pm pitt time ( Apr 26, 8:00 am Beijing time) **

Negative-Mass Hydrodynamics in a Spin-Orbit–Coupled BoseEinstein Condensate M. A. Khamehchi, K. Hossain, M. E. Mossman, Y. Zhang, Th. Busch, M. McNeil Forbes, and P. Engels, PRL 118, 155301 (2017)
 * May 3, Max Arzamasovs ****, Wednesday 8 :00 pm pitt time ( May 4, 8:00 am Beijing time) **

(This week's meeting is shifted because of time conflict with a Cornell summer school our group member(s) will attend.) Recurrences in an isolated quantum many-body system Jörg Schmiedmayer Group, arXiv:1705.08231
 * May 30, Xuguang Yue ****, Tuesday 8 :00 pm pitt time ( May 31, 8:00 am Beijing time) **

Experimental Realization of Long-Range Antiferromagnetism Markus Greiner Group, arXiv: 1612.08436, Nature **545,** 462 (2017)
 * Jun 28, Biao Huang ****, Wednesday 8 :00 pm pitt time ( Jun 29, 8:00 am Beijing time) **

(This week's meeting is shifted because of Pitt-PKU workshop in Fragrant Hill coming up in the same week) Bloch oscillations in the absence of a lattice Ref: F Meinert, M Knap, E Kirilov, K Jag-Lauber, M Zvonarev, E Demler, H Nagerl. Science 356, 945 (2017)
 * Jul 25, Haiyuan Zou ****, Tuesday 8 :00 pm pitt time ( Jul 26, 8:00 am Beijing time) **

(This week's meeting is shifted because of the travel plan of Prof. Vincent Liu) A stripe phase with supersolid properties in spin–orbit-coupled Bose–Einstein condensates Ketterle Group, Nature 543, 91–94 (2017)
 * Aug 21, **** Ahmet Keles ****, Mondy 8 :00 pm pitt time ( Aug 22, 8:00 am Beijing time) **

Observation of Efimov molecules created from a resonantly interacting Bose gas arXiv:1704.01206. E. Cornell group + Z. Hadzibabic
 * Aug 30, **** Max Arzamasovs ****, **** Wednesday **** 8 :00 pm pitt time ( Aug 31, 8:00 am Beijing time) **

Discrete Time-Crystalline Order in Cavity and Circuit QED Systems Z. Gong et al., arXiv:1708.01472 (2017)
 * Sep 6, **** Jiansong Pan ****, **** Wednesday **** 8 :00 pm pitt time ( Sep 7, 8:00 am Beijing time) **

Thermalization near integrability in a dipolar quantum Newton’s cradle Tang et.al., arXiv:1707.07031
 * Sep 13, Xuguang Yue ****, **** Wednesday **** 8 :00 pm pitt time ( Sep 14, 8:00 am Beijing time) **

Stretching p-wave molecules by transverse confinements L. Zhou, X. Cui, arxiv:1707.03512
 * Sep 20, Biao Huang ****, **** Wednesday **** 8 :00 pm pitt time ( Sep 21, 8:00 am Beijing time) **

Sep 27, group meeting is skipped, due to the MURI Kickoff meeting in Santa Barbara.

Four-body ring-exchange interactions and anionic statistics within a minimal topic-code Hamiltonian Ref: H Dai, B Yang, A Reingruber, H Sun, X Xu, Y Chen, Z Yuan, J Pan DOI:10.1038/nphys4243 (2017) Controlled parity switch of persistent currents in quantum ladders Michele Filippone, Charles-Edouard Bardyn, and Thierry Giamarchi arXiv:1710.02152
 * Oct 4, Haiyuan Zou ****, **** Wednesday **** 8 :00 pm pitt time ( Oct 5, 8:00 am Beijing time) **
 * Oct 11, **** Ahmet Keles ****, **** Wednesday **** 8 :00 pm pitt time ( Oct 12, 8:00 am Beijing time) **

Topological superfluidity with repulsive alkaline-earth atoms in optical lattices L. Isaev, A. Kaufman, G. Ortiz, and A. M. Rey arXiv:1710.02768
 * Oct 18, **** Max Arzamasovs ****, **** Wednesday **** 8 :00 pm pitt time ( Oct 19, 8:00 am Beijing time) **

Observation of "broad" d-wave Feshbach resonances with a triplet structure Y. Cui et al., arXiv: 1709.08794(2017)
 * Oct 25, **** Jiansong Pan ****, **** Wednesday **** 8 :00 pm pitt time ( Oct 26, 8:00 am Beijing time) **

Coherent many-body spin dynamics in a long-range interacting Ising chain I. Bloch Group, arXiv:1705.08372
 * Nov 1, **** Xuguang Yue ****, **** Wednesday **** 8 :00 pm pitt time ( Nov 2, 8:00 am Beijing time) **

(U.S. Time Changes)

Mobility Edge in 1D Quasi-Periodic Optical Lattice Xiao Li, Xiaopeng Li, S. Das Sarma PRB 96, 085119 (2017) I. Bloch’s group 1709.03478
 * Nov 8, **** Biao Huang ****, **** Wednesday **** 7 :00 pm pitt time ( Nov 9, 8:00 am Beijing time) **

Symmetry protected topological phase transitions of dipolar molecules on zigzag chain
 * Nov 15, Haiyuan Zou ****, **** Wednesday **** 7 :00 pm pitt time ( Nov 16, 8:00 am Beijing time) **

Correlated Spin-Flip Tunneling in a Fermi Lattice Gas Wenchao Xu, William Morong, Hoi-Yin Hui, Vito W. Scarola, and Brian DeMarco arXiv:1711.02061
 * Nov 22, **** Ahmet Keles ****, **** Wednesday **** 7 :00 pm pitt time ( Nov 23, 8:00 am Beijing time) **


 * Nov 29, **** Max Arzamasovs ****, **** Wednesday **** 7 :00 pm pitt time ( Nov 30, 8:00 am Beijing time) **

Majorana edge state in a number-conserving Fermi gas with tunable p-wave interaction X. Y. Yin, Tin-Lun Ho, and Xiaoling Cui arXiv:1711.08765

Collective modes of Bose-Einstein condensate in a spherical trap
 * Dec 6, **** Jiansong Pan ****, **** Wednesday **** 7 :00 pm pitt time ( Dec 7, 8:00 am Beijing time) **


 * Dec 13, Xuguang Yue ****, **** Wednesday **** 7 :00 pm pitt time ( Dec 14, 8:00 am Beijing time) **

Coupling two order parameters in a quantum gas [|arXiv:1711.07988v1]

Winter Break (Dec 17- Jan 7)