Coherence length of an elongated condensate: a study by matter-wave interferometry
Soft Condensed Matter
2007-05-23 v1
Abstract
We measure the spatial correlation function of Bose-Einstein condensates in the cross-over region between phase-coherent and strongly phase-fluctuating condensates. We observe the continuous path from a gaussian-like shape to an exponential-like shape characteristic of one-dimensional phase-fluctuations. The width of the spatial correlation function as a function of the temperature shows that the condensate coherence length undergoes no sharp transition between these two regimes.
Keywords
Cite
@article{arxiv.cond-mat/0501456,
title = {Coherence length of an elongated condensate: a study by matter-wave interferometry},
author = {Mathilde Hugbart and Jocelyn Retter and Fabrice Gerbier and Andres Varon and Simon Richard and Joseph Thywissen and David Clement and Philippe Bouyer and Alain Aspect},
journal= {arXiv preprint arXiv:cond-mat/0501456},
year = {2007}
}
Comments
8 pages, 6 figure, submitted to EPJD