Strongly Interacting Atom Lasers in Three-Dimensional Optical Lattices

Journal Article · Fri Oct 29 00:00:00 EDT 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.105.180401· OSTI ID:21476592

Hen, Itay; Rigol, Marcos ^[1]

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1. Department of Physics, Georgetown University, Washington, D.C. 20057 (United States)

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.

• OSTI ID: 21476592
• Journal Information: Physical Review Letters, Vol. 105, Issue 18; Other Information: DOI: 10.1103/PhysRevLett.105.180401; (c) 2010 American Institute of Physics; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
AMPLITUDES
ANALYTICAL SOLUTION
ATOMS
BOSE-EINSTEIN CONDENSATION
BOSONS
LASERS
MEAN-FIELD THEORY
MELTING
THREE-DIMENSIONAL CALCULATIONS
MATHEMATICAL SOLUTIONS
PHASE TRANSFORMATIONS