Enhancing the quantum entanglement and EPR steering of a coupled optomechanical system with a squeezed vacuum field
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 is 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.
- Publication:
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Journal of the Optical Society of America B Optical Physics
- Pub Date:
- November 2023
- DOI:
- 10.1364/JOSAB.495520
- arXiv:
- arXiv:2310.14593
- Bibcode:
- 2023JOSAB..40.2885W
- Keywords:
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- Quantum Physics
- E-Print:
- JOSAB. 40, 2885-2893 (2023)