Entanglement detection in hybrid optomechanical systems

TitleEntanglement detection in hybrid optomechanical systems
Publication TypeJournal Article
Year of Publication2011
AuthorsDe Chiara, G, Paternostro, M, Palma, MG
JournalPhys. Rev. A
Other NumbersarXiv:1105.0513

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.

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