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正交混合态的局域分辨

任林源1, 李永明1,2   

  1. 1. 陕西师范大学 数学与信息科学学院, 西安 710062; 2. 陕西师范大学 计算机科学学院, 西安 710062
  • 收稿日期:2007-03-28 修回日期:1900-01-01 出版日期:2008-03-26 发布日期:2008-03-26
  • 通讯作者: 李永明

Local Discrimination of Quantum Orthogonal Mixed States

REN Lin yuan1, LI Yong ming1,2   

  1. 1. College of Mathematics and Information Science, Shaanxi Normal University, Xi’an 710062, China;2. College of Computer Sciences, Shaanxi Normal University, Xi’an 710062, China
  • Received:2007-03-28 Revised:1900-01-01 Online:2008-03-26 Published:2008-03-26
  • Contact: LI Yong ming

摘要: 考虑混合态的局域精确分辨, 利用混合态的Schmidt数分析混合态的局域分辨, 证明正交混合态为乘积态或Schmidt数之和不大于整个Hilbert空间的维数是局域分辨的必要条件及任意两个混合正交乘积态可以局域分辨.

关键词: 正交混合态, 纠缠, 局域分辨, Schmidt数

Abstract: We first investigated the perfect discrimination of mixed quantum, and analyzed the local discrimination of quantum orthogonal mixed states using the Schmidt number of the states, gaining two necessary conditions. One is that quantum orthogonal mixed states for discrimination must be product states; on the base of the results, we also proved that two arbitrary bipartite orthogonal product states can be distinguished by local operation and classical communication (LOCC). The other is that the sum of the Schmidt numbers of the mixed states should be less than the dimension of the whole Hilbert space which the states belong to. 

Key words: orthogonal mixed states, entanglement, local operation and classical communication discrimination, Schmidt number

中图分类号: 

  • O413