Visibility of Cold Atomic Gases in Optical Lattices for Finite Temperatures

Details Visibility of Cold Atomic Gases in Optical Lattices for Finite Temperatures Visibility of Cold Atomic Gases in Optical Lattices for Finite Temperatures

2008-09-04

arxiv.org/abs/0809.0771v1

Physical Review A 79, 053623 (2009)

Physics

Condensed Matter

Statistical Mechanics

Author Information under http://www.theo-phys.uni-essen.de/tp/ags/pelster_dir/

Scientific paper

In nearly all experiments with ultracold atoms time-of-flight pictures are the only data available. In this paper we present an analytical strong-coupling calculation for those time-of-flight pictures of bosons in an optical lattice in the Mott phase. This allows us to determine the visibility, which quantifies the contrast of peaks in the time-of-flight pictures, and we suggest how to use it as a thermometer.

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