Entangling two macroscopic mechanical mirrors in a two-cavity optomechanical system

Abstract

We propose a simple method to generate quantum entanglement between two macroscopic mechanical resonators in a two-cavity optomechanical system. This entanglement is induced by the radiation pressure of a single photon hopping between the two cavities. Our results are analytical, so that the entangled states are explicitly shown. Up to local operations, these states are two-mode three-component states, and hence the degree of entanglement can be well quantified by the concurrence. By analyzing the system parameters, we find that, to achieve a maximum average entanglement, the system should work in the single-photon strong-coupling regime and the deep-resolved-sideband regime.DOI: http://dx.doi.org/10.1103/PhysRevA.89.014302Published 10 January 2014Received 10 November 2013©2014 American Physical Society