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(De)coherence Physics With Condensates In Microtraps

Henkel, C.; Gardiner, S.A.; Negretti, A.

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C. Henkel

A. Negretti


We discuss the dynamics of a condensate in a miniaturized electromagnetic trap formed above a microstructured substrate. Recent experiments have found that trap lifetimes get reduced when approaching the substrate because atoms couple to thermally excited near fields. The data agree quantitatively with our theory [Appl. Phys. B 69, 379 (1999)]. We focus on the decoherence of a quantum degenerate gas in a quasi-one- dimensional trap. Monte Carlo simulations indicate that atom interactions reduce the condensate decoherence rate. This is explained by a simple theory in terms of the suppression of long-wavelength excitations. We present preliminary simulation results for the adiabatic generation of dark solitons.


Henkel, C., Gardiner, S., & Negretti, A. (2004). (De)coherence Physics With Condensates In Microtraps. Laser Physics, 14(4), 615-620

Journal Article Type Article
Publication Date Mar 1, 2004
Deposit Date Jun 30, 2010
Publicly Available Date Nov 19, 2010
Journal Laser Physics
Print ISSN 1054-660X
Electronic ISSN 1555-6611
Publisher IOP Publishing
Peer Reviewed Peer Reviewed
Volume 14
Issue 4
Pages 615-620
Publisher URL


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