中国物理B ›› 2016, Vol. 25 ›› Issue (7): 74202-074202.doi: 10.1088/1674-1056/25/7/074202

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Entanglement of movable mirror and cavity field enhanced by an optical parametric amplifier

Cai-yun Zhang(张彩云), Hu Li(李虎), Gui-xia Pan(潘桂侠), Zong-qiang Sheng(圣宗强)   

  1. Anhui University of Science and Technology, Huainan 232001, China
  • 收稿日期:2015-12-27 修回日期:2016-03-01 出版日期:2016-07-05 发布日期:2016-07-05
  • 通讯作者: Cai-yun Zhang E-mail:zcylh9@163.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11247001), the Scientific Research Foundation of the Higher Education Institutions of Anhui Province, China (Grant No. KJ2012A083), and the Doctor (Master) Fund of Anhui University of Science and Technology, China.

Entanglement of movable mirror and cavity field enhanced by an optical parametric amplifier

Cai-yun Zhang(张彩云), Hu Li(李虎), Gui-xia Pan(潘桂侠), Zong-qiang Sheng(圣宗强)   

  1. Anhui University of Science and Technology, Huainan 232001, China
  • Received:2015-12-27 Revised:2016-03-01 Online:2016-07-05 Published:2016-07-05
  • Contact: Cai-yun Zhang E-mail:zcylh9@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11247001), the Scientific Research Foundation of the Higher Education Institutions of Anhui Province, China (Grant No. KJ2012A083), and the Doctor (Master) Fund of Anhui University of Science and Technology, China.

摘要: A scheme to generate entanglement in a cavity optomechanical system filled with an optical parametric amplifier is proposed. With the help of the optical parametric amplifier, the stationary macroscopic entanglement between the movable mirror and the cavity field can be notably enhanced, and the entanglement increases when the parametric gain increases. Moreover, for a given parametric gain, the degree of entanglement of the cavity optomechanical system increases with increasing input laser power.

关键词: optomechanical system, optical parametric amplifier, stationary macroscopic entanglement

Abstract: A scheme to generate entanglement in a cavity optomechanical system filled with an optical parametric amplifier is proposed. With the help of the optical parametric amplifier, the stationary macroscopic entanglement between the movable mirror and the cavity field can be notably enhanced, and the entanglement increases when the parametric gain increases. Moreover, for a given parametric gain, the degree of entanglement of the cavity optomechanical system increases with increasing input laser power.

Key words: optomechanical system, optical parametric amplifier, stationary macroscopic entanglement

中图分类号:  (Quantum state engineering and measurements)

  • 42.50.Dv
03.67.Mn (Entanglement measures, witnesses, and other characterizations)