TY  - JOUR
A1  - Henkel, Carsten
A1  - Gardiner, Simon A.
A1  - Negretti, Antonio
T1  - (De)coherence physics with condensates in microtraps
N2  - 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
Y1  - 2004
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/15171
SN  - 1054-660X
ER  -