Bulletin of the American Physical Society
47th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 61, Number 8
Monday–Friday, May 23–27, 2016; Providence, Rhode Island
Session 1A: Graduate Student SymposiumInvited
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Chair: Nathan Lundblad, Bates College Room: 551AB |
Monday, May 23, 2016 8:30AM - 8:55AM |
1A.00001: Sign In |
Monday, May 23, 2016 8:55AM - 9:00AM |
1A.00002: Welcome |
Monday, May 23, 2016 9:00AM - 10:15AM |
1A.00003: Superfluidity in ultracold gases Gretchen Campbell The study of superfluidity has a long and rich history. In Bose-Einstein condensate, superfluidity gives rise to a number of interesting effects, including quantized vortices and persistent currents. In this seminor I will give an introduction to superfluidity in ultracold atoms, including a discussion of the critical velocity and the spectrum of elementary excitations in superfluid systems. [Preview Abstract] |
Monday, May 23, 2016 10:15AM - 10:45AM |
1A.00004: COFFEE BREAK
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Monday, May 23, 2016 10:45AM - 12:00PM |
1A.00005: Non-equilibrium dynamics in AMO quantum simulators Andrew Daley Recently, the possibility to control and measure AMO systems time-dependently has generated a lot of progress in exploring out-of-equilibrium dynamics for strongly interacting many-particle systems. This connects directly to fundamental questions relating to the relaxation of such systems to equilibrium, as well as the spreading of correlations and build-up of entanglement. While ultracold atoms allow for exceptional microscopic control over quantum gases with short-range interactions, experiments with polar molecules and chains of trapped ions now also offer the possibility to investigate spin models with long-range interactions. I will give an introduction to the recent developments in this area, illustrated with two examples: (i) the possibility to measurement entanglement for many itinerant particles with ultracold atoms in optical lattices, and (ii) new opportunities to compare dynamics with short and long-range interactions, especially using systems of trapped ions, where it is possible to control the effective range of interactions. [Preview Abstract] |
Monday, May 23, 2016 12:00PM - 1:15PM |
1A.00006: LUNCH
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Monday, May 23, 2016 1:15PM - 2:30PM |
1A.00007: Fun with ultracold few-body systems Doerte Blume Few-body physics has played a pivotal role in quantum mechanics from the very beginning. Prime examples include the helium atom and molecular hydrogen. The realization of ultracold atoms has opened up new avenues for exploring few-body quantum mechanics. Three-body processes, for example, are instrumental in understanding the stability of large ultracold atomic samples. This talk will summarize recent theoretical and experimental ultracold few-body studies. The talk will conclude with a list of open questions. [Preview Abstract] |
Monday, May 23, 2016 2:30PM - 2:45PM |
1A.00008: COFFEE BREAK
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Monday, May 23, 2016 2:45PM - 4:00PM |
1A.00009: Large spin magnetism with cold atoms Bruno Laburthe-Tolra The properties of quantum gases made of ultra-cold atoms strongly depend on the interactions between atoms. These interactions lead to condensed-matter-like collective behavior, so that quantum gases appear to be a new platform to study quantum many-body physics. In this seminar, I will focus on the case where the atoms possess an internal (spin) degrees of freedom. The spin of atoms is naturally larger than that of electrons. Therefore, the study of the magnetic properties of ultra-cold gases allows for an exploration of magnetism beyond the typical situation in solid-state physics where magnetism is associated to the s=1/2 spin of the electron. I will describe three specific cases : spinor Bose-Einstein condensates, where spin-dependent contact interactions introduce new quantum phases and spin dynamics ; large spin magnetic atoms where strong dipole-dipole interactions lead to exotic quantum magnetism ; large spin Fermi gases. [Preview Abstract] |
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