Population and Phase Coherence during the Growth of an Elongated Bose-Einstein Condensate
Other Condensed Matter
2016-08-16 v2
Abstract
We study the growth of an elongated phase-fluctuating condensate from a non-equilibrium thermal cloud obtained by shock-cooling. We compare the growth of the condensate with numerical simulations, revealing a time delay and a reduction in the growth rate which we attribute to phase fluctuations. We measure the phase coherence using momentum Bragg spectroscopy, and thereby observe the evolution of the phase coherence as a function of time. Combining the phase coherence results with the numerical simulations, we suggest a simple model for the reduction of the growth rate based on the reduction of bosonic stimulation due to phase fluctuations and obtain improved agreement between theory and experiment.
Keywords
Cite
@article{arxiv.cond-mat/0602346,
title = {Population and Phase Coherence during the Growth of an Elongated Bose-Einstein Condensate},
author = {Mathilde Hugbart and Jocelyn A. Retter and Andres Varòn and Philippe Bouyer and Alain Aspect and Matthew J. Davis},
journal= {arXiv preprint arXiv:cond-mat/0602346},
year = {2016}
}