Creation of coherence in Bose-Einstein condensates by atom detection

Details Creation of coherence in Bose-Einstein condensates by atom detection Creation of coherence in Bose-Einstein condensates by atom detection

1999-03-05

arxiv.org/abs/quant-ph/9903024v1

J.Phys. B32 (1999) 3421

Physics

Quantum Physics

10 pages, 8 figures (postscript)

Scientific paper

10.1088/0953-4075/32/14/312

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.

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