Exploring quantum correlations in a hybrid optomechanical system

Abstract

Refining coherence is a central challenge in quantum simulations and experiments on optomechanical cavities. Here we suggest a scheme of two coupled optomechanical cavities to enhance the intracavity entanglement. The couplings are established between the optical modes through a photon hopping process and between the mechanical resonators by the phonon tunneling process. Both cavities are driven by classical light. The generated quantum correlations inside each cavity are explored in terms of strength couplings with two different quantum measures, namely, logarithmic negativity and quantum steering. These will allow us to analyze the various aspects of these quantum measures and see the interest in their applications. Also, the stability conditions are examined in terms of the coupling strengths. Consequently, it is shown that the intracavity-entanglement degree can be quantified, and it is found that the generated entanglement can be improved with an appropriate choice of the photon and phonon hopping strengths. The calculations were performed within the recent experimentally accessible parameters.