Bulletin of the American Physical Society
APS March Meeting 2019
Volume 64, Number 2
Monday–Friday, March 4–8, 2019; Boston, Massachusetts
Session V36: Experimental Realizations of Many-Body Localization and SimulationInvited
|
Hide Abstracts |
Sponsoring Units: DAMOP Chair: Alex (Ruichao) Ma, University of Chicago Room: BCEC 205C |
Thursday, March 7, 2019 2:30PM - 3:06PM |
V36.00001: Generating many-body localization in a trapped ion quantum simulator Invited Speaker: Paul Hess Levitated crystals of trapped atomic ions are a versatile platform for realizing interacting quantum spin models and studying quantum nonequilibrium phenomena. In this talk, I will discuss how programmable laser-induced disorder can be used to generate a many-body localized (MBL) state in a long-range interacting trapped ion crystal. This technique for generating MBL was also applied in concert with a time-periodic Hamiltonian to explore how MBL can help stabilize discrete time crystalline states of matter. The experiment’s single spin resolved measurements and controllable interactions allow us to characterize the MBL state’s properties in ways not accessible to other atomic or condensed matter systems. |
Thursday, March 7, 2019 3:06PM - 3:42PM |
V36.00002: Exploring the many-body localization transition in two dimensions Invited Speaker: Jae-yoon Choi Non-equilibrium dynamics in a closed quantum system has become a central theme in modern statistical mechanics, where experimental studies are accessible via cold atoms, trapped ion, and NV-center spin system. Many-body localization (MBL) is one example of non-trivial quantum phases of matter in non-equilibrium, where initial state information can persist for infinitely long time, violating fundamental hypothesis of classical statistical physics. In this talk, I will introduce a recent experiments of the MBL phase in two dimensions using ultra cold atoms in optical lattice. We prepare a far out-of-equilibrium state and trace its dynamical evolution under disorder potential. We observe the system does not thermalize above a non-zero disorder and verify the interaction effect. Finally, I will present a effect of finite thermal bath on the MBL phase, which can shed light on the stability of the MBL system in higher dimensions. |
Thursday, March 7, 2019 3:42PM - 4:18PM |
V36.00003: Engineering Trapped-Ion Systems for Large Scale Quantum Simulation Invited Speaker: Guido Pagano Laser cooled trapped ions offer unprecedented control over both internal and external degrees of freedom at the single-particle level. They are considered among the foremost candidates for realizing quantum simulation and computation platforms that can outperform classical computers at specific tasks. In this talk I will show how linear arrays of trapped 171Yb+ ions can be used as a versatile platform for studying quantum dynamics of strongly correlated many-body quantum systems. |
Thursday, March 7, 2019 4:18PM - 4:54PM |
V36.00004: Signatures of the Many-Body Localized Regime in Two Dimensions Invited Speaker: Thorsten Wahl Lessons from Anderson localization highlight the importance of dimensionality of real space for |
Thursday, March 7, 2019 4:54PM - 5:30PM |
V36.00005: Discrete time-crystalline order in black diamond: realization and probe of quantum many-body dynamics Invited Speaker: Soonwon Choi Strongly interacting solid-state spin ensembles provide a promising platform to explore quantum many-body physics. In particular, Nitrogen-Vacancy (NV) centers in diamond are appealing as they exhibit excellent spin properties even at room temperature. In this talk, I will present how a high-density NV ensemble can be used to investigate out-of-equilibrium quantum many-body phenomena. In particular, I will discuss the recent experimental observation of discrete time-crystalline (DTC) order: a nonequilibrium order characterized by a spontaneous breaking of time-translational symmetry and manifested in robust, long-lived subharmonic responses of a periodically driven system [1]. By engineering different types of effective interactions, we find that the spin ensemble can exhibit a long-lived robust subharmonic response over a wide range of parameters. Additional systematic investigation of the lifetime of the DTC response reveals three different regimes of relaxation dynamics, that can be continuously varied from disorder-induced slow thermalization, to driving assisted relaxation, and ultimately to universal Markovian dynamics [2]. These results highlight the utility of high-density NV ensembles as a probe of many-body dynamics and thermalization, an important aspect in the quest for the understanding and control of quantum matter, and may enable novel applications in quantum simulation and metrology with strongly correlated quantum matter [3]. |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700