Phase coherence length of a Bose-Einstein condensate
Gerbier, F. · Richard, S. · Thywissen, J. H. · Hugbart, M. · Bouyer, P. · Aspect, A.
Original · EN
We report on the measurement of the momentum distribution of an elongated Bose-Einstein condensate. A broadening of the distribution with increasing temperature is observed, which is clear evidence for phase fluctuations in the sample.
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