个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职:物理学院党委书记
其他任职:无
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:物理学院
学科:理论物理
办公地点:313
Enhancement of mechanical entanglement in hybrid optomechanical system
点击次数:
论文类型:期刊论文
发表时间:2021-01-10
发表刊物:QUANTUM INFORMATION PROCESSING
卷号:19
期号:10
ISSN号:1570-0755
关键字:Entanglement; Optomechanical system; Atomic ensemble
摘要:We present a theoretical scheme for the enhancement of entanglement between the two distant mechanical resonators in a hybrid optomechanical system which is composed of a single-mode optomechanical cavity with an atomic ensemble of two-level atoms and two mechanical resonators coupled via Coulomb field. Our results show that the atomic detuning, collective atomic coupling and Coulomb interaction play a vital role in obtaining the enhanced entanglement between the two distant mechanical resonators. We can interplay these controlling parameters to obtain optimal entanglement for the system. Interestingly, the numerical simulation result reveals that such bi-partite entanglement persists for bath temperature up to 600 K. In the end, we show that the system's interaction with the atomic ensemble lead to an enhanced entanglement spectrum, which is robust against bath temperature as well. The present scheme will open new perspectives in constructing entanglement between two distant resonators and helpful to realize quantum memories for the continuous-variable quantum information processing.