1. Coherence length of an elongated condensate.
- Author
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Hugbart, M., Retter, J. A., Gerbier, F., Varón, A. F., Richard, S., Thywissen, J. H., Clément, D., Bouyer, P., and Aspect, A.
- Subjects
BOSE-Einstein condensation ,COHERENCE (Physics) ,PHASE space ,ATOMS ,OPTICAL fibers ,INTERFEROMETERS ,PHYSICS - 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. [ABSTRACT FROM AUTHOR]
- Published
- 2005
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