1,337 research outputs found
A superfluid gyroscope with cold atomic gases
A trapped Bose-Einstein condensed atomic gas containing a quantized vortex is
predicted to exhibit precession after a sudden rotation of the confining
potential.
The equations describing the motion of the condensate are derived and the
effects of superfluidity explicitly pointed out. The dependence of the
precession frequency on the relevant parameters of the problem is discussed.
The proposed gyroscope is well suited to explore rotational effects at the
level of single quanta of circulation.Comment: 1 eps figur
Detection of Pair-Superfluidity for bosonic mixtures in optical lattices
We consider a mixture of two bosonic species with tunable interspecies
interaction in a periodic potential and discuss the advantages of low filling
factors on the detection of the pair-superfluid phase. We show how the
emergence of such a phase can be put dramatically into evidence by looking at
the interference pictures and density correlations after expansion and by
changing the interspecies interaction from attractive to repulsive.Comment: 4 pages, 4 figure
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