Enhancing stationary entanglement between two optomechanical oscillators by Coulomb interaction with Kerr medium  

作　　者：Tian-Le Yang Chen-Long Zhu Sheng Liu Ye-Jun Xu 杨天乐;朱陈龙;刘声;许业军(International Research Center of Quantum Information and Photoelectric Information,School of Mechanical and Electronic Engineering,Chizhou University,Chizhou 247000,China)

机构地区：[1]International Research Center of Quantum Information and Photoelectric Information,School of Mechanical and Electronic Engineering,Chizhou University,Chizhou 247000,China

出　　处：《Chinese Physics B》2021年第12期406-412,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.11704051)。

摘　　要：We theoretically study the stationary entanglement of two charged nanomechanical oscillators coupling via Coulomb interaction in an optomechanical system with an additional Kerr medium.We show that the degree of entanglement between two nanomechanical oscillators is suppressed by Kerr interaction due to photon blockade and enhanced by Coulomb coupling strength.We also show other parameters for adjusting and obtaining entanglement,such as the driving power and the frequencies of the two oscillators,and the entanglement is robust against temperature.Our study proves a way for adjusting stationary entanglement between two optomechanical oscillators by Coulomb interaction and Kerr medium.

关 键 词：ENTANGLEMENT Kerr interaction Coulomb interaction OPTOMECHANICS 

分 类 号：O413[理学—理论物理] TN752[理学—物理]