|Title||Entanglement detection in hybrid optomechanical systems|
|Publication Type||Journal Article|
|Year of Publication||2011|
|Authors||De Chiara, G, Paternostro, M, Palma, MG|
|Journal||Phys. Rev. A|
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.