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Entanglement detection in hybrid optomechanical systems

By Gabriele De Chiara, Mauro Paternostro and G. Massimo Palma


We study a device formed by a Bose Einstein condensate (BEC) coupled to the field of a cavity with a moving end-mirror and find a working point such that the mirror-light entanglement is reproduced by the BEC-light quantum correlations. This provides an experimentally viable tool for inferring mirror-light entanglement with only a limited set of assumptions. We prove the existence of tripartite entanglement in the hybrid device, persisting up to temperatures of a few milli-Kelvin, and discuss a scheme to detect it.Comment: 6 pages, 7 figures, published versio

Topics: Quantum Physics, Condensed Matter - Quantum Gases
Year: 2011
DOI identifier: 10.1103/PhysRevA.83.052324
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