Enhancing quantum correlations and entanglement in an optomechanical system via cross-Kerr nonlinearity

Abstract

In this work, we theoretically study the quantum correlations present in an optomechanical system by invoking an additional cross-Kerr coupling between the optical and mechanical mode. Under experimentally achievable conditions, we first show that a significant enhancement of the steady-state entanglement could be achieved at a considerably lower driving power, which is also extremely robust with respect to system parameters and environmental temperature. Then, we employ Gaussian quantum discord as a witness of the genuine quantumness of the correlation present in the system and discuss its dependence on the cross-Kerr nonlinearity.

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Cited by in corpus (6)

• Enhancement of few-photon optomechanical effects with cross-Kerr nonlinearity
• Improving photon blockade, entanglement and mechanical-cat-state generation in a generalized cross-Kerr optomechanical circuit
• Enhancing the quantum entanglement and EPR steering of a coupled optomechanical system with a squeezed vacuum field
• Solution of Cross-Kerr Interaction Combined with Parametric Amplification
• Quantum correlations enhanced in hybrid optomechanical system via phase tuning
• Kerr-enhanced optomechanical entanglement generation via reservoir design