Bulletin of the American Physical Society
55th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Monday–Friday, June 3–7, 2024; Fort Worth, Texas
Session G05: Novel Phases of Cold Atoms, Ions, and Molecules
10:30 AM–12:30 PM,
Wednesday, June 5, 2024
Room: 202AB
Chair: Murray Holland, Uuniversity of Colorado Boulder
Abstract: G05.00009 : Studying frustration with ultracold bosons in a triangular optical lattice*
12:06 PM–12:18 PM
Presenter:
Mehedi Hasan
(University of Cambridge)
Authors:
Mehedi Hasan
(University of Cambridge)
Luca Donini
(University of Cambridge)
Sompob Shanokprasith
(University of Cambridge)
Daniel Braund
(University of Cambridge)
Tobias Marozsak
(University of Cambridge)
Max Melchner von Dydiowa
(University of Cambridge)
Dan Reed
(University of Cambridge)
Tiffany Harte
(University of Cambridge)
Ulrich Schneider
(University of Cambridge)
We experimentally study this transition in an optical lattice. Instead of actively changing the sign of the tunnelling, we utilize negative absolute temperatures where atoms predominantly occupy the highest-energy states. We find that due to the inherent geometric frustration, the critical interaction for the bosonic SF-MI transition is strongly reduced. Furthermore, by dynamically crossing the SF-MI transition in variable time we observe a smooth emergence of coherence, reminiscent of the Kibble-Zurek mechanism. This is consistent with a continuous phase transition and thereby suggests the existence of an intervening chiral Mott insulator phase.
*Funding agencies: European Union (ERC), EPSRC, and the EPSRC hub on Quantum Computing and Simulation
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