arXiv:1010.5553 · Physical Review Letters

Strongly Interacting Atom Lasers in Three-Dimensional Optical Lattices

Itay Hen, Marcos Rigol

Published Oct 26, 2010• 15 citations

Abstract

We show that the dynamical melting of a Mott insulator in a three-dimensional lattice leads to condensation at nonzero momenta, a phenomenon that can be used to generate strongly interacting atom lasers in optical lattices. For infinite on-site repulsion, the case considered here, the momenta at which bosons condense are determined analytically and found to have a simple dependence on the hopping amplitudes. The occupation of the condensates is shown to scale linearly with the total number of atoms in the initial Mott insulator. Our results are obtained by using a Gutzwiller-type mean-field approach, gauged against exact-diagonalization solutions of small systems.

DOI: 10.1103/physrevlett.105.180401

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