Dynamics of a Bose-Einstein condensate at finite temperature in an atom-optical coherence filter

Year: 2002

Authors: Ferlaino F., Maddaloni P., Burger S., Cataliotti F.S, Fort C., Modugno M., Inguscio M.

Autors Affiliation: INFM–European Laboratory for Nonlinear Spectroscopy (LENS) and Dipartimento di Fisica, Universita` di Firenze,
via Nello Carrara 1, I-50019 Sesto Fiorentino (Firenze), Italy

Abstract: The macroscopic coherent tunneling through the barriers of a periodic potential is used as an atom-optical
filter to separate the center of mass of the condensate and the thermal components of a 87Rb mixed cloud. We
condense in the combined potential of a laser standing wave superimposed on the axis of a cigar-shaped
magnetic trap and induce condensate dipole oscillation in the presence of a static thermal component. The
oscillation is damped due to the interaction with the thermal fraction and we investigate the role played by the
periodic potential in the damping process.


Volume: 66 (1)      Pages from: 011604R-1  to: 011604R-4

KeyWords: Collective excitations; Bloch oscillations; Frequency-shifts; Lattices; Solitons; Arrays; Gases
DOI: 10.1103/PhysRevA.66.011604

Citations: 35
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