Dark-State Cooling of Atoms by Superfluid Immersion

Journal Article · Fri Dec 01 00:00:00 EST 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.97.220403· OSTI ID:20861404

Griessner, A; Daley, A J; Zoller, P ^[1]; Clark, S R; Jaksch, D ^[2]

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1. Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, A-6020 Innsbruck (Austria)
2. Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU (United Kingdom)

We propose and analyze a scheme to cool atoms in an optical lattice to ultralow temperatures within a Bloch band and away from commensurate filling. The protocol is inspired by ideas from dark-state laser cooling but replaces electronic states with motional levels and spontaneous emission of photons by emission of phonons into a Bose-Einstein condensate, in which the lattice is immersed. In our model, achievable temperatures correspond to a small fraction of the Bloch bandwidth and are much lower than the reservoir temperature. This is also a novel realization of an open quantum optical system, where known tools are combined with new ideas involving cooling via a reservoir.

• OSTI ID: 20861404
• Journal Information: Physical Review Letters, Vol. 97, Issue 22; Other Information: DOI: 10.1103/PhysRevLett.97.220403; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMS
BOSE-EINSTEIN CONDENSATION
COOLING
PHONONS
PHOTON EMISSION
PHOTONS
RESERVOIR TEMPERATURE
SUPERFLUIDITY
TEMPERATURE RANGE 0000-0013 K