Reservoir-engineered entanglement in an unresolved-sideband optomechanical system  

作　　者：Yang-Yang Wang Rong Zhang Stefano Chesi Ying-Dan Wang 

机构地区：[1]Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100190,China [2]School of Physical Sciences,University of Chinese Academy of Sciences,No.19A Yuquan Road,Beijing 100049,China [3]Beijing Computational Science Research Center,Beijing 100193,China [4]Department of Physics,Beijing Normal University,Beijing 100875,China [5]Synergetic Innovation Center for Quantum Effects and Applications,Hunan Normal University,Changsha 410081,China

出　　处：《Communications in Theoretical Physics》2021年第5期54-65,共12页理论物理通讯（英文版）

基　　金：support from NSFC(Grant No.11574330 and No.11434011),NSFC(Grants No.11974040 and No.1171101295);MOST(Grant No.2017FA0304500);the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDB23000000);support from the National Key Research and Development Program of China(Grant No.2016YFA0301200);NSAF(Grant No.U1930402)。

摘　　要：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.

关 键 词：quantum entanglement optomechanical cavity the unresolved-sideband regime reservoir engineering 

分 类 号：TN752[电子电信—电路与系统] O413[理学—理论物理]