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Phys. Rev. A 69, 043602 (2004) [5 pages]

Decoherence of Bose-Einstein condensates in microtraps

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C. Henkel1 and S. A. Gardiner2 *
1Institut für Physik, Universität Potsdam, 14469 Potsdam, Germany
2Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU, United Kingdom

Received 16 September 2003; published 1 April 2004

We discuss the impact of thermally excited near fields on the coherent expansion of a condensate in a miniaturized electromagnetic trap. Monte Carlo simulations are compared with a kinetic two-component theory and indicate that atom interactions can slow down decoherence. This is explained by a simple theory in terms of the condensate dynamic structure factor.


©2004 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevA.69.043602
DOI: 10.1103/PhysRevA.69.043602
PACS: 03.75.Gg, 03.65.Yz, 05.40.−a

* Present address: JILA, University of Colorado and National Institute of Standards and Technology, Boulder, CO 80309-0440, USA.

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