A Griessner et al 2007 New J. Phys. 9 44 doi:10.1088/1367-2630/9/2/044
Dissipative dynamics of atomic Hubbard models coupled to a phonon bath: dark state cooling of atoms within a Bloch band of an optical lattice
Focus on Cold Atoms in Optical LatticesA Griessner1,2, A J Daley1,2, S R Clark3, D Jaksch3 and P Zoller1,2
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We analyse a laser assisted sympathetic cooling scheme for atoms within the lowest Bloch band of an optical lattice. This scheme borrows ideas from sub-recoil laser cooling, implementing them in a new context in which the atoms in the lattice are coupled to a Bose–Einstein condensate (BEC) reservoir. In this scheme, excitation of atoms between Bloch bands replaces the internal structure of atoms in normal laser cooling, and spontaneous emission of photons is replaced by creation of excitations in the BEC reservoir. We analyse the cooling process for many bosons and fermions, and obtain possible temperatures corresponding to a small fraction of the Bloch band width within our model. This system can be seen as a novel realisation of a many-body open quantum system.
- PACS
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32.50.+d Fluorescence, phosphorescence (including quenching)
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- Dates
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Issue 2 (February 2007)
Received 11 December 2006
Published 28 February 2007
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Dissipative dynamics of atomic Hubbard models coupled to a phonon bath: dark state cooling of atoms within a Bloch band of an optical lattice
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