中国物理B ›› 2013, Vol. 22 ›› Issue (3): 30306-030306.doi: 10.1088/1674-1056/22/3/030306

• GENERAL • 上一篇    下一篇

Squeezing entangled state of two particles with unequal masses

杨阳a, 范洪义b   

  1. a Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China;
    b Department of Material Science and Engineering, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:2012-08-15 修回日期:2012-08-29 出版日期:2013-02-01 发布日期:2013-02-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 10975125).

Squeezing entangled state of two particles with unequal masses

Yang Yang (杨阳)a, Fan Hong-Yi (范洪义)b   

  1. a Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China;
    b Department of Material Science and Engineering, University of Science and Technology of China, Hefei 230026, China
  • Received:2012-08-15 Revised:2012-08-29 Online:2013-02-01 Published:2013-02-01
  • Contact: Yang Yang E-mail:yangyang@mail.ustc.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 10975125).

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摘要： For two unequal-mass particles, we construct the entangled state representation and then derive the corresponding squeezing operator. This squeezing operator has a natural realization in the entangled state representation, which exhibits the intrinsic relation between squeezing and quantum entanglement. This squeezing operator involves both two-mode squeezing and the direct product of two single-mode squeezings. The maximum squeezing occurs when the two particles possess equal mass. When two particles' mass difference becomes large, the component of the two single-mode squeezings becomes dominant.

关键词: squeezing operator, integration within an ordered product (IWOP) technique, entangled state representation

Abstract: For two unequal-mass particles, we construct the entangled state representation and then derive the corresponding squeezing operator. This squeezing operator has a natural realization in the entangled state representation, which exhibits the intrinsic relation between squeezing and quantum entanglement. This squeezing operator involves both two-mode squeezing and the direct product of two single-mode squeezings. The maximum squeezing occurs when the two particles possess equal mass. When two particles' mass difference becomes large, the component of the two single-mode squeezings becomes dominant.

Key words: squeezing operator, integration within an ordered product (IWOP) technique, entangled state representation

中图分类号:  (Entanglement and quantum nonlocality)

  • 03.65.Ud
42.50.-p (Quantum optics)