The dynamics of a Bose-Einstein condensate nonadiabatically loaded into a one-dimensional optical lattice is studied by analyzing the phase coherence between sites along the lattice as well as the radial profile of the condensate after a time-of flight. A simple model is proposed that predicts the short-time dephasing 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 rethermalization due to dissipation of the initial condensate excitations into high-lying modes.

Decay and revival of phase coherence of a Bose-Einstein condensate in a one-dimensional lattice

CIAMPINI, DONATELLA;ARIMONDO, ENNIO
2003-01-01

Abstract

The dynamics of a Bose-Einstein condensate nonadiabatically loaded into a one-dimensional optical lattice is studied by analyzing the phase coherence between sites along the lattice as well as the radial profile of the condensate after a time-of flight. A simple model is proposed that predicts the short-time dephasing 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 rethermalization due to dissipation of the initial condensate excitations into high-lying modes.
2003
O., Morsch; J. H., Müller; Ciampini, Donatella; M., Cristiani; P. B., Blakie; C. J., Williams; P. S., Julienne; Arimondo, Ennio
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/184465
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