Decay and Revival of Phase Coherence of a Bose-Einstein Condensate in a One-Dimensional Lattice
O Morsch, J H. Muller, D Ciampini, M Cristiani, P B. Blakie, Carl J. Williams, Paul S. Julienne, E Arimondo
The mode structure of a Bose-Einstein condensate non-adiabatically loaded into a one-dimensional optical lattice is studied by analyzing the visibility of the interference pattern as well as the radial profile of the condensate after a time-of-flight. A simple model is proposed that predicts the short-time decrease of the visibility as a function of the condensate parameters. In the radial direction, heavily damped oscillations are observed, as well as an increase in the condensate temperature. These findings are interpreted as a re-thermalization due to dissipation of the initial condensate excitations into high-lying modes.
Physical Review A (Atomic, Molecular and Optical Physics)
, Muller, J.
, Ciampini, D.
, Cristiani, M.
, Blakie, P.
, Williams, C.
, Julienne, P.
and Arimondo, E.
Decay and Revival of Phase Coherence of a Bose-Einstein Condensate in a One-Dimensional Lattice, Physical Review A (Atomic, Molecular and Optical Physics)
(Accessed December 2, 2023)