Steady-state one-way Einstein-Podolsky-Rosen steering in optomechanical interfaces

TL;DR

This paper proposes a scheme to achieve steady-state one-way Gaussian EPR steering between two electromagnetic fields mediated by a mechanical oscillator, demonstrating robustness against thermal noise and potential for hybrid microwave-optical systems.

Contribution

It introduces a novel method for realizing steady-state one-way EPR steering in optomechanical interfaces, including conditions for asymmetric steering and its robustness.

Findings

Steady-state one-way EPR steering is achievable with different cavity losses or strong mechanical damping.

The scheme is robust against thermal mechanical fluctuations.

Potential for hybrid microwave-optical asymmetric steering via optoelectromechanics.

Abstract

Einstein-Podolsky-Rosen (EPR) steering is a form of quantum correlations and its intrinsic asymmetry makes it distinct from entanglement and Bell nonlocality. We propose here a scheme for realizing one-way Gaussian steering of two electromagnetic fields mediated by a mechanical oscillator. We reveal that the steady-state one-way steering of the intracavity and output fields is obtainable with different cavity losses or strong mechanical damping. The conditions for achieving this asymmetric steering are found, and it shows that the steering is robust against thermal mechanical fluctuations. The present scheme can realize hybrid microwave-optical asymmetric steering by optoelectromechanics. In addition, our results are generic and can also be applied to other three-mode parametrically-coupled bosonic systems.