Reservoir-engineered entanglement in an unresolved-sideband optomechanical system. (25th March 2021)

• Record Type: Journal Article
• Authors: Wang, Yang-Yang; Zhang, Rong; Chesi, Stefano; Wang, Ying-Dan
• Is Part Of: Communications in theoretical physics. Volume 73:Number 5(2021)
• Publication Date: 2021-03-25
• Subjects: quantum entanglement -- optomechanical cavity -- the unresolved-sideband regime -- reservoir engineering; Physics -- Periodicals; 530.105
• DOI: 10.1088/1572-9494/abe2f8
• Languages: English
• ISSNs: 0253-6102

Abstract

Abstract: We study theoretically the generation of strong entanglement of two mechanical oscillators in an unresolved-sideband optomechanical cavity, using a reservoir engineering approach. In our proposal, the effect of unwanted counter-rotating terms is suppressed via destructive quantum interference by the optical field of two auxiliary cavities. For arbitrary values of the optomechanical interaction, the entanglement is obtained numerically. In the weak-coupling regime, we derive an analytical expression for the entanglement of the two mechanical oscillators based on an effective master equation, and obtain the optimal parameters to achieve strong entanglement. Our analytical results are in accord with numerical simulations.