Creation of coherence in Bose-Einstein condensates by atom detection

Abstract

We investigate the creation of a relative phase between two Bose-Einstein condensates, initially in number states, by detection of atoms and show how the system approaches a coherent state. Two very distinct time scales are found: one for the creation of the interference is of the order of the detection time for a few single atoms and another, for the preparation of coherent states, of the order of the detection time for a significant fraction of the total number of atoms. Approximate analytic solutions are derived and compared with exact numerical results.

10 pages, 8 figures (postscript)

References in corpus (2)

• Measurements of Relative Phase in Binary Mixtures of Bose-Einstein Condensates
• Phase Dynamics of Bose-Einstein Condensates: Losses versus Revivals

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