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Strongly Interacting Atom Lasers in Three-Dimensional Optical Lattices

Itay Hen and Marcos Rigol
Phys. Rev. Lett. 105, 180401 – Published 26 October 2010
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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.

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  • Received 13 June 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.180401

© 2010 The American Physical Society

Authors & Affiliations

Itay Hen and Marcos Rigol

  • Department of Physics, Georgetown University, Washington, D.C. 20057, USA

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Issue

Vol. 105, Iss. 18 — 29 October 2010

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