Momentum spectroscopy of 1D phase fluctuations in Bose-Einstein condensates - Archive ouverte HAL
Article Dans Une Revue Physical Review Letters Année : 2003

Momentum spectroscopy of 1D phase fluctuations in Bose-Einstein condensates

Résumé

We measure the axial momentum distribution of Bose-Einstein condensates with an aspect ratio of 152 using Bragg spectroscopy. We observe the Lorentzian momentum distribution characteristic of one-dimensional phase fluctuations. The temperature dependence of the width of this distribution provides a quantitative test of quasi-condensate theory. In addition, we observe a condensate length consistent with the absence of density fluctuations, even when phase fluctuations are large.
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Dates et versions

hal-00116296 , version 1 (12-04-2016)

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Simon Richard, Fabrice Gerbier, Joseph H. Thywissen, Mathilde Hugbart, Philippe Bouyer, et al.. Momentum spectroscopy of 1D phase fluctuations in Bose-Einstein condensates. Physical Review Letters, 2003, 91 (1), pp.010405. ⟨10.1103/PhysRevLett.91.010405⟩. ⟨hal-00116296⟩
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