广西师范大学学报（自然科学版） ›› 2013, Vol. 31 ›› Issue (1): 21-25.

• • 上一篇    下一篇

Λ型三能级原子诱导光机械系统的稳态纠缠

肖瑞杰1, 刘野2, 彭亚晶1, 孔令江3   

  1. 1.渤海大学数理学院物理系,辽宁锦州121013;
    2.锦州师范高等专科学校物理系,辽宁锦州121000;
    3.广西师范大学物理科学与技术学院,广西桂林541004
  • 收稿日期:2012-09-18 出版日期:2013-03-20 发布日期:2018-11-26
  • 通讯作者: 肖瑞杰(1978—),女,辽宁锦州人,渤海大学教师,大连理工大学博士研究生。E-mail:xrjxrj2003@163.com
  • 基金资助:
    国家自然科学基金资助项目(21203012,11161051)

The Stable Entanglement of Optomechanical System Induced by Λ-type Three-level Atoms

XIAO Rui-jie1, LIU Ye2, PENG Ya-jing1, KONG Ling-jiang3   

  1. 1.College of Mathematics and Physics,Bohai University,JinzhouLiaoning 121013,China;
    2.Department of Physics,Jinzhou Teachers Training College,Jinzhou Liaoning 121000,China;
    3.College of Physics Science and Technology,Guangxi Normal University,Guilin Guangxi 541004,China
  • Received:2012-09-18 Online:2013-03-20 Published:2018-11-26

摘要： 为了研究原子对光机械系统的影响,将原子引入到一个双模动腔系统中,本文提出了一个由Λ型三能级原子去纠缠两个介观镜以及双模腔场的理论方案。由于原子的介入,使得腔场与移动的镜子之间发生相互作用。利用量子朗之万方程,结合激光的线性近似理论,求出此系统的稳态解。同时,采用西蒙判据,对系统的稳态纠缠进行了数值模拟。研究结果表明,纠缠是由原子的相干态诱导的,即使对于机械品质因子较低的坏腔,当腔场与原子之间的耦合系数取值恰当时,两个移动的镜子,两模腔场以及腔场与较远镜子之间都会产生纠缠。并且得出,耦合系数越大,纠缠越大,即入射率越大,纠缠越大。由于在此混合系统中,任何两体之间都是纠缠的,得出此系统中存在多体纠缠现象。

关键词: 光机械系统, 哈密顿, 朗之万方程, 纠缠

Abstract: In an quantum system where the atoms coupled to an optomechanical system,the interaction between each component (e.g.atoms,cavity field and movingmirror) is inevitable.A scheme is presented for Λ-type three-levelatoms to entangle two mesoscopic mirrors.This study shows that the two movablemirrors,the two-mode fields as well as the mirror and the distant cavity mode areall entangled respectively,if the coupling between the cavity fields and the atom is suitable.

Key words: optomechanical system, Hamiltonian, Langevin equation, entanglement

中图分类号: 

  • O413.2
[1] 张永德.量子信息物理原理[M].北京:科教出版社,2005.
[2] 杜江峰,李卉,许晓栋,等.量子“囚徒困境”[J].广西师范大学学报:自然科学版,2001,19(4):1-6.
[3] 毕桥,柳贵平,李永.量子相干网络[J].广西师范大学学报:自然科学版,2008,26(1):1-6.
[4] VITALI D,GIGAN S,FERREIRA A.Optomechanical entanglement betweena movablemirror and a cavity field[J].Phys Rev Lerr,2007,98(3):030405.
[5] GENESC,MARI A,TOMBESI P.Robust entanglement of a micromechanical resonator with output optical fields[J].Phys Rev A,2008,78(3):032316.
[6] VITALI D,MANCINI S,TOMBESI P.Stationary entanglement between two movablemirrors in a classically driven Fabry-Perot cavity[J].J Phys A,2007,40(28):8055-8068.
[7] HUANG Su-mei,AGARWAL G S.Entangling nanomechanical oscillators inaring cavity by feeding squeezed light[J].New J Phys,2009,11(10):103044.
[8] GENES C,RITSCH H,VITALI D.Micromenchanical oscillator ground-state cooling via resonant intracavity optical gain or absorption[J].Phys Rev A,2009,80(6):061803.
[9] ZHANG Shuang,GENOV D A,WANG Yuan,et al.Plasmon-induced transparency in metamaterials[J].Phys Rev Lett,2008,101(4):047401.
[10] SCULLY M O,ZUBAIRY M S.Quantum optics[M].London:Cambridge University Press,1997.
[11] SIMON R.Peres-horodecki separability criterion for continuousvariable systems[J].Phys Rev Lett,2000,84(12):2726-2729.
[12] KATIUSCIA N C,ALESSANDRO S V.Scalable continuous-variable entanglement oflight beams produced by optical parametric oscillators[J].Phys Rev A,2008,77(2):022311.
[13] GERARDO A,ALESSIO S,FABRIZIO I.Extremal entanglement and mixedness in continuous variable systems[J].Phys Rev A,2004,70(2):022318.
[1] 肖瑞杰, 刘野, 修晓明, 孔令江. 耦合腔光机械系统中两个机械振子的态交换[J]. 广西师范大学学报（自然科学版）, 2015, 33(1): 15-19.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
版权所有 © 广西师范大学学报（自然科学版）编辑部
地址：广西桂林市三里店育才路15号　邮编：541004
电话：0773-5857325　E-mail: gxsdzkb@mailbox.gxnu.edu.cn
本系统由北京玛格泰克科技发展有限公司设计开发