| 正交混合态的局域分辨 |
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| 引用本文： | 任林源,李永明.正交混合态的局域分辨[J].吉林大学学报(理学版),2008,46(2):317-319. |
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| 作者姓名： | 任林源 李永明 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金
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国家重点基础研究发展计划(973计划) |
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| 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.
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| 关 键 词： | 正交混合态 纠缠 局域分辨 Schmidt数 |
| 文章编号： | 1671-5489(2008)02-0317-03 |
| 收稿时间： | 2007-03-28 |
| 修稿时间： | 2007年3月28日 |
Local Discrimination of Quantum Orthogonal Mixed States |
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| REN Lin-yuan,LI Yong-ming.Local Discrimination of Quantum Orthogonal Mixed States[J].Journal of Jilin University: Sci Ed,2008,46(2):317-319. |
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| Authors: | REN Lin-yuan LI Yong-ming |
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| Institution: | 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 |
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| 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. |
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| Keywords: | orthogonal mixed states entanglement local operation and classical communication discrimination Schmidt number |
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