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2007
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Visibility of a Bose-condensed gas released from an optical lattice at finite temperatures
F. Gerbier
S. Foelling
A. Widera
I. Bloch
Abstrak
In response to a recent manuscript [cond-mat/0609685] on the analysis of interference patterns produced by ultracold atoms released from an optical lattice, we point out that in the presence of a Bose-Einstein condensate the interference pattern can be strongly modified by interaction effects and the presence of a harmonic trap superimposed on the lattice potential. Our results show that the visibility of the interference pattern is significant only if a sizeable condensate fraction is present in the trap.
Topik & Kata Kunci
Penulis (4)
F
F. Gerbier
S
S. Foelling
A
A. Widera
I
I. Bloch
Akses Cepat
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