中国物理B ›› 2014, Vol. 23 ›› Issue (8): 80302-080302.doi: 10.1088/1674-1056/23/8/080302

• GENERAL • 上一篇    下一篇

A sufficient and necessary criterion for separability of bipartite quantum states

赵慧, 于欣玉   

  1. College of Applied Science, Beijing University of Technology, Beijing 100124, China
  • 收稿日期:2013-12-16 修回日期:2014-02-12 出版日期:2014-08-15 发布日期:2014-08-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11101017 and 11275131), Beijing Natural Science Foundation Program, and the Scientific Research Key Program of Beijing Municipal Commission of Education (Grant No. KZ201210028032), and the Importation and Development of High-Caliber Talents Project of Beijing Municipal Institutions (Grant No. CIT&TCD201404067).

A sufficient and necessary criterion for separability of bipartite quantum states

Zhao Hui (赵慧), Yu Xin-Yu (于欣玉)   

  1. College of Applied Science, Beijing University of Technology, Beijing 100124, China
  • Received:2013-12-16 Revised:2014-02-12 Online:2014-08-15 Published:2014-08-15
  • Contact: Zhao Hui E-mail:zhaohui@bjut.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11101017 and 11275131), Beijing Natural Science Foundation Program, and the Scientific Research Key Program of Beijing Municipal Commission of Education (Grant No. KZ201210028032), and the Importation and Development of High-Caliber Talents Project of Beijing Municipal Institutions (Grant No. CIT&TCD201404067).

摘要: A sufficient and necessary criterion for separability of bipartite quantum states is presented. We construct a class of mixed states in 2⊗ k quantum systems and in 3⊗ k quantum systems, respectively and show that these states are separable if and only if they are positive partial transpositions.

关键词: positive partial transposition, separability

Abstract: A sufficient and necessary criterion for separability of bipartite quantum states is presented. We construct a class of mixed states in 2 k quantum systems and in 3k quantum systems, respectively and show that these states are separable if and only if they are positive partial transpositions.

Key words: positive partial transposition, separability

中图分类号:  (Quantum information)

  • 03.67.-a
03.65.Ud (Entanglement and quantum nonlocality)