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Resolved diffraction patterns from a reflection grating for atoms
J. Esteve, D. Stevens, V. Savalli +3
We have studied atomic diffraction at normal incidence from an evanescent standing wave with a high resolution using velocity selective Raman transitions. We have observed up to 3…
Momentum distribution and correlation function of quasicondensates in elongated traps
F. Gerbier, J. H. Thywissen, S. Richard +3
We calculate the spatial correlation function and momentum distribution of a phase-fluctuating, elongated three-dimensional condensate, in a trap and in free expansion. We take the…
Phase coherence length of a Bose-Einstein condensate
F. Gerbier, S. Richard, J. H. Thywissen +3
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…