9903024v1

related topics
{time, wave, function}
{state, states, coherent}
{photon, photons, single}
{level, atom, field}
{state, phys, rev}
{cavity, atom, atoms}
{time, decoherence, evolution}
{state, states, entangled}

Creation of coherence in Bose-Einstein condensates by atom detection

Peter Horak, Stephen M. Barnett

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.

oai_identifier:
oai:arXiv.org:quant-ph/9903024
categories:
quant-ph
comments:
10 pages, 8 figures (postscript)
doi:
10.1088/0953-4075/32/14/312
arxiv_id:
quant-ph/9903024
journal_ref:
J.Phys. B32 (1999) 3421
created:
1999-03-05

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