Detection of pair-superfluidity for bosonic mixtures in optical lattices

Year: 2010

Authors: Menotti C., Stringari S.

Autors Affiliation: INO-CNR BEC Center and Dipartimento di Fisica, Universita’ di Trento, I-38123 Povo (TN), Italy

Abstract: 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.


Volume: 81 (4)      Pages from: 045604  to: 045604

More Information: We acknowledge financial support by MIUR PRIN 2007. The authors thank F. Becca, I. Bloch, J. Catani, F. Minardi, M. Modugno, B. Svistunov, and E. Taylor for interesting discussions.
DOI: 10.1103/PhysRevA.81.045604

Citations: 17
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