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

• URL: http://arxiv.org/abs/2310.14593v1
• Date: Mon, 23 Oct 2023 06:00:45 GMT
• Title: Enhancing the quantum entanglement and EPR steering of a coupled optomechanical system with a squeezed vacuum field
• Authors: Shao-Xiong Wu, Cheng-Hua Bai, Gang Li, Chang-shui Yu, and Tiancai Zhang
• Abstract summary: How to enhance the quantum entanglement and EPR steering of coupled optomechanical systems with a weak squeezed vacuum field are studied. 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.
• Score: 3.281025673103092
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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