Measurement of the Spatial Correlation Function of Phase Fluctuating Bose-Einstein Condensates
Soft Condensed Matter
2009-11-10 v1
Abstract
We measure the intensity correlation function of two interfering spatially displaced copies of a phase fluctuating Bose-Einstein Condensate (BEC). It is shown that this corresponds to a measurement of the phase correlation properties of the initial condensate. Analogous to the method used in the stellar interferometer experiment of Hanbury Brown and Twiss, we use spatial intensity correlations to determine the phase coherence lengths of elongated BECs. We find good agreement with our prediction of the correlation function and confirm the expected coherence length.
Keywords
Cite
@article{arxiv.cond-mat/0303308,
title = {Measurement of the Spatial Correlation Function of Phase Fluctuating Bose-Einstein Condensates},
author = {D. Hellweg and L. Cacciapuoti and M. Kottke and T. Schulte and K. Sengstock and W. Ertmer and J. J. Arlt},
journal= {arXiv preprint arXiv:cond-mat/0303308},
year = {2009}
}
Comments
5 pages, 4 figures