Jimenez, K.
, Lin, Y.
, Porto, J.
and Spielman, I.
(2010),
Phases of a 2D Bose Gas in an Optical Lattice, Physical Review Letters, [online], https://doi.org/10.1103/PhysRevLett.105.110401
(Accessed October 31, 2024)
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Phases of a 2D Bose Gas in an Optical Lattice
Published
Author(s)
, , ,
Abstract
Ultra-cold atoms in optical lattices realize essential models in condensed matter physics. Like with most experiments with ultra-cold atoms, our Rubidium-87 Bose Einstein condensate is confined in a harmonic trapping potential that persists even when loaded into an optical lattice. Here we realize the 2D Bose-Hubbard Hamiltonian and focus on the effects of the trapping term, not present in bulk condensed matter systems. By measuring condensate fraction we identify the transition from superfluid to insulator as a function of atom density and lattice depth. Our results are in excellent agreement with the Quantum Monte Carlo universal state diagram suitable for the trapped systems introduced by Rigol et. al. (Phys. Rev. A 79, 053605 (2009)).Citation
Physical Review Letters
Pub Type
Journals
Download Paper
Keywords
atomic physics, Bose-Einstein condensate (BEC), Bose-Hubbard model, Mott insulator, optical lattices, phase diagram, quantum gases
Citation
Issues
If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.
Created September 9, 2010, Updated November 10, 2018