Expansion of matter waves in static and driven periodic potentials
Quantum Gases
2010-10-14 v1
Abstract
We study the non-equilibrium dynamics of cold atoms held in an optical lattice potential. The expansion of an initially confined atom cloud occurs in two phases: an initial quadratic expansion followed by a ballistic behaviour at long times. Accounting for this gives a good description of recent experimental results, and provides a robust method to extract the effective intersite tunneling from time-of-flight measurements.
Keywords
Cite
@article{arxiv.1008.0708,
title = {Expansion of matter waves in static and driven periodic potentials},
author = {C. E. Creffield and F. Sols and D. Ciampini and O. Morsch and E. Arimondo},
journal= {arXiv preprint arXiv:1008.0708},
year = {2010}
}
Comments
4 pages, 3 eps figures