Dark-State Cooling of Atoms by Superfluid Immersion
Journal Article
·
· Physical Review Letters
- Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, A-6020 Innsbruck (Austria)
- 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
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