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.
Dynamics of a Bose-Einstein condensate at finite temperature in an atom-optical coherence filter / F. FERLAINO; P. MADDALONI; S. BURGER; F. CATALIOTTI; C. FORT; M. MODUGNO; M. INGUSCIO. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - STAMPA. - 66:(2002), pp. 011604-011604.
Dynamics of a Bose-Einstein condensate at finite temperature in an atom-optical coherence filter
CATALIOTTI, FRANCESCO SAVERIO;FORT, CHIARA;MODUGNO, MICHELE;INGUSCIO, MASSIMO
2002
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.
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