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Title: Ultracold atoms in an optical lattice with dynamically variable periodicity

Abstract

The use of a dynamic 'accordion' lattice with ultracold atoms is demonstrated. Ultracold atoms of {sup 87}Rb are trapped in a two-dimensional optical lattice, and the spacing of the lattice is then increased in both directions from 2.2 to 5.5 {mu}m. Atoms remain bound for expansion times as short as a few milliseconds, and the experimentally measured minimum ramp time is found to agree well with numerical calculations. This technique allows an experiment such as quantum simulations to be performed with a lattice spacing smaller than the resolution limit of the imaging system, while allowing imaging of the atoms at individual lattice sites by subsequent expansion of the optical lattice.

Authors:
; ;  [1]
  1. Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU (United Kingdom)
Publication Date:
OSTI Identifier:
21448419
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 82; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevA.82.021604; (c) 2010 The American Physical Society; Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 74 ATOMIC AND MOLECULAR PHYSICS; ATOMS; COMPUTERIZED SIMULATION; EXPANSION; PERIODICITY; QUANTUM MECHANICS; RESOLUTION; RUBIDIUM 87; TRAPPING; TWO-DIMENSIONAL CALCULATIONS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; INTERMEDIATE MASS NUCLEI; ISOTOPES; MECHANICS; NUCLEI; ODD-EVEN NUCLEI; RADIOISOTOPES; RUBIDIUM ISOTOPES; SIMULATION; VARIATIONS; YEARS LIVING RADIOISOTOPES

Citation Formats

Al-Assam, S, Williams, R A, and Foot, C J. Ultracold atoms in an optical lattice with dynamically variable periodicity. United States: N. p., 2010. Web. doi:10.1103/PHYSREVA.82.021604.
Al-Assam, S, Williams, R A, & Foot, C J. Ultracold atoms in an optical lattice with dynamically variable periodicity. United States. https://doi.org/10.1103/PHYSREVA.82.021604
Al-Assam, S, Williams, R A, and Foot, C J. Sun . "Ultracold atoms in an optical lattice with dynamically variable periodicity". United States. https://doi.org/10.1103/PHYSREVA.82.021604.
@article{osti_21448419,
title = {Ultracold atoms in an optical lattice with dynamically variable periodicity},
author = {Al-Assam, S and Williams, R A and Foot, C J},
abstractNote = {The use of a dynamic 'accordion' lattice with ultracold atoms is demonstrated. Ultracold atoms of {sup 87}Rb are trapped in a two-dimensional optical lattice, and the spacing of the lattice is then increased in both directions from 2.2 to 5.5 {mu}m. Atoms remain bound for expansion times as short as a few milliseconds, and the experimentally measured minimum ramp time is found to agree well with numerical calculations. This technique allows an experiment such as quantum simulations to be performed with a lattice spacing smaller than the resolution limit of the imaging system, while allowing imaging of the atoms at individual lattice sites by subsequent expansion of the optical lattice.},
doi = {10.1103/PHYSREVA.82.021604},
url = {https://www.osti.gov/biblio/21448419}, journal = {Physical Review. A},
issn = {1050-2947},
number = 2,
volume = 82,
place = {United States},
year = {2010},
month = {8}
}