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arXiv · 2310.14593

Enhancing the quantum entanglement and EPR steering of a coupled optomechanical system with a squeezed vacuum field

Shao-Xiong Wu·Cheng-Hua Bai·Gang Li·Chang-shui Yu·Tiancai Zhang
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Abstract

Quantum entanglement and Einstein-Podolsky-Rosen (EPR) steering are valuable resources in quantum information processing. How to enhance the quantum entanglement and EPR steering of coupled optomechanical systems with a weak squeezed vacuum field are studied when the displacement of detuning induced by the mechanical mode is considered. Compared with the condition that the system interacts with a vacuum environment, the quantum entanglement and EPR steering are stronger when the squeezed vacuum field is applied. A squeezed vacuum field with a large degree is not beneficial to enhance the quantum entanglement and EPR steering. Rather than the squeezing parameter of the squeezed vacuum field, the reference phase plays a vital role in this model.

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Shao-Xiong Wu, Cheng-Hua Bai, Gang Li, Chang-shui Yu, Tiancai Zhang. 2023-10-23. Enhancing the quantum entanglement and EPR steering of a coupled optomechanical system with a squeezed vacuum field. https://doi.org/10.1364/josab.495520

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