期刊
EUROPEAN PHYSICAL JOURNAL D
卷 65, 期 1-2, 页码 33-42出版社
SPRINGER
DOI: 10.1140/epjd/e2011-20050-3
关键词
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资金
- National Office for Research and Technology [ERC_HU_09 OPTOMECH]
- European Science Foundation
- Spanish MEC project TOQATA [FIS2008-00784]
- Spanish MEC project QOIT
- ERC
- EU
We develop a mean-field model describing the Hamiltonian interaction of ultracold atoms and the optical field in a cavity. The Bose-Einstein condensate is properly defined by means of a grand-canonical approach. The model is efficient because only the relevant excitation modes are taken into account. However, the model goes beyond the two-mode subspace necessary to describe the self-organization quantum phase transition observed recently. We calculate all the second-order correlations of the coupled atom field and radiation field hybrid bosonic system, including the entanglement between the two types of fields.
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