吉林大学学报(理学版)

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两光子的自旋态与纠缠态

王广德1, 刘晓静2,3, 李宏2, 马季2, 李雪2, 张斯淇3   

  1. 1. 吉林师范大学 信息技术学院, 吉林 四平 136000;2. 吉林师范大学 物理学院, 吉林 四平 136000; 3. 吉林大学 物理学院, 长春 130012
  • 收稿日期:2015-01-08 出版日期:2015-09-26 发布日期:2015-09-29
  • 通讯作者: 刘晓静 E-mail:xjliu_82@163.com

TwoPhoton Spin States and Entanglement States

WANG Guangde1, LIU Xiaojing2,3, LI Hong2, MA Ji2, LI Xue2, ZHANG Siqi3   

  1. 1. School of Information and Technology, Jilin Normal University, Siping 136000, Jilin Province, China;2. School of Physics, Jilin Normal University, Siping 136000, Jilin Province, China;3. College of Physics, Jilin University, Changchun 130012, China
  • Received:2015-01-08 Online:2015-09-26 Published:2015-09-29
  • Contact: LIU Xiaojing E-mail:xjliu_82@163.com

摘要:

用量子理论方法给出两光子的自旋态, 即通过2个单光子自旋态的直积并叠加得到两光子的自旋本征态, 从而给出两光子的纠缠态, 所得结果与用经典极化矢量表示的两光子纠缠态不同, 该结果可应用于量子通讯和量子计算中.

关键词: 两光子, 自旋态, 纠缠态

Abstract:

We gave the spin states of twophoton using quantum theory approach, i.e., twophoton spin eigen states were expressed by the superposition of the direct product of two single photon spin states. Then, we obtained the quantum representation of twophoton entanglement states, which are different from the classical polarization vector expression of twophoton entanglement state. The results could be used in quantum communication and quantum computation.

Key words: twophoton, spin state, entanglement state

中图分类号: 

  • O431.2