Superfluidity of interacting bosonic mixtures in optical lattices

Bryce Gadway, Daniel Pertot, René Reimann, Dominik Schneble

Research output: Contribution to journalArticlepeer-review


We report the observation of many-body interaction effects for a homonuclear bosonic mixture in a three-dimensional optical lattice with variable state dependence along one axis. Near the superfluid-to-Mott insulator transition for one component, we find that the presence of a second component can reduce the apparent superfluid coherence, most significantly when the second component either experiences a strongly localizing lattice potential or none at all. We examine this effect by varying the relative populations and lattice depths, and discuss the observed behavior in view of recent proposals for atomic-disorder and polaron-induced localization.

Original languageEnglish (US)
Article number045303
JournalPhysical review letters
Issue number4
StatePublished - Jul 23 2010
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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