Stability and entanglement in optical-atomic amplification of trapped atoms: the role of atomic collisions

Details Stability and entanglement in optical-atomic amplification of trapped atoms: the role of atomic collisions Stability and entanglement in optical-atomic amplification of trapped atoms: the role of atomic collisions

2006-11-07

arxiv.org/abs/quant-ph/0611078v2

Phys. Rev. A 75, 043604 (2007)

Physics

Quantum Physics

6 pages, 4 figures, accepted by PRA

Scientific paper

10.1103/PhysRevA.75.043604

Atomic collisions are included in an interacting system of optical fields and trapped atoms allowing field amplification. We study the effects of collisions on the system stability. Also a study of the degree of entanglement between atomic and optical fields is made. We found that, for an atomic field initially in a vacuum state and optical field in a coherent state, the degree of entanglement does not depend on the optical field intensity or phase. We show that in conditions of exponential instability the system presents at long times two distinct stationary degree of entanglement with collisions affecting only one of them.

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