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Article Dans Une Revue Physical Review A : Atomic, molecular, and optical physics [1990-2015] Année : 2011

Momentum-resolved study of an array of one-dimensional strongly phase-fluctuating Bose gases

Résumé

We investigate the coherence properties of an array of one-dimensional Bose gases with short-scale phase fluctuations. The momentum distribution is measured using Bragg spectroscopy, and an effective coherence length of the whole ensemble is defined. In addition, we propose and demonstrate that time-of-flight absorption imaging can be used as a simple probe to directly measure the coherence length of one-dimensional gases in the regime where phase fluctuations are strong. This method is suitable for future studies such as investigating the effect of disorder on the phase coherence.
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Dates et versions

hal-00620043 , version 1 (07-09-2011)

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Nicole Fabbri, David Clément, Leonardo Fallani, Chiara Fort, Massimo Inguscio. Momentum-resolved study of an array of one-dimensional strongly phase-fluctuating Bose gases. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2011, 83 (031604(R)), http://pra.aps.org/abstract/PRA/v83/i3/e031604. ⟨10.1103/PhysRevA.83.031604⟩. ⟨hal-00620043⟩
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