(De)coherence Physics With Condensates In Microtraps

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

(De)coherence Physics With Condensates In Microtraps

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

Authors

C. Henkel

Professor Simon Gardiner s.a.gardiner@durham.ac.uk
Professor

A. Negretti

Abstract

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.

Citation

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	http://www.maik.ru/cgi-bin/search.pl?type=abstract&name=lasphys&number=4&year=4&page=615