量子电子学报

• 量子光学 • 上一篇    下一篇

压缩调控下腔光力系统的非经典性质

彭基柱 , 王长春, 马宇航, 刘敏, 许业军   

  1. 池州学院机电工程学院 量子信息与光电信息交叉研究中心,安徽 池州 247000
  • 出版日期:2019-09-28 发布日期:2019-09-18
  • 作者简介:彭基柱 (1977-),广西桂平人,硕士,讲师,主要从事量子信息与腔光力学. E-mail: jzpeng@czu.edu.cn
  • 基金资助:
    Supported by Natural Science Foundation of China(国家自然科学基金,11704051),Natural Science Foundation of anhui Province of China(安徽省自然科学基金,1808085MA21)

Nonclassical properties of cavity optomechanical system manipulated by squeezing

PENG Jizhu, MA Yuhang, LIU Min, XU Yejun   

  1. Interdisciplinary Research Center of Quantum and Photoelectric Information,School of Mechanical and Electronic Engineering,Chizhou University,Chizhou,24700,China
  • Published:2019-09-28 Online:2019-09-18

摘要: 研究了压缩真空态和数态输入下的腔光力系统的动力学演化特性,分析了系统参数对系统线性熵和Wigner函数的调控作用。数值计算表明:调节压缩因子r值可以改变机械模Wigner函数分布特性,当r取较大值时,可使腔场与振子间的纠缠显著增强;增大机械模参数k的取值,将减小腔模Wigner函数负值深度和范围。

关键词: 量子光学, 腔光力系统, 线性熵, Wigner函数, 压缩效应

Abstract: The dynamical properties of optomechanical system are investigated for an initial state composed of squeezed vacuum state and number state.The effect of system parameters on the linear entropy and Wigner function is analyzed. The numerical results indicate that the Wigner function for mechanical mode can be effectively manipulated by adjusting the value of squeezing factor r. Especially, increasing the value of r can enhance significantly the entanglement between cavity mode and mechanical mode. Both negativity depth and region of the Wigner function for optical mode decrease with increasing the value of the parameter k.

Key words: quantum optics, optomechanical system, linear entropy, Wigner function, squeezing effect