| 基于概率克隆的量子态区分定理 |
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| 引用本文： | 张文海,戴结林,曹卓良,杨名.基于概率克隆的量子态区分定理[J].中国科学:物理学 力学 天文学,2011(7):850-854. |
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| 作者姓名： | 张文海 戴结林 曹卓良 杨名 |
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| 作者单位： | [1]淮南师范学院物理系,淮南232001 [2]合肥师范学院物理系,合肥230601 [3]安徽大学物理与材料科学学院,合肥230039 |
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| 基金项目： | 国家自然科学基金（批准号：10704001）、安徽省级高等学校自然科学研究（编号：KJ20IOZD08,KJ20108172和KJ20108204）和淮南师范学院博士研究启动资金资助项目 |
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| 摘 要： | 基于概率量子克隆，给出两个量子态区分理论中著名的Helstrom界限，并将著名的IDP极限推广到一般情况,基于最优概率克隆的幺正变换，给出验证Helstrom界限和推广IDP极限的一般幺正变换,对于特殊的输入态，给出有利于在实验上实现两种测量的具体幺正变换．
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| 关 键 词： | 量子态区分 POVM测量 Helstrom界限 IDP极限 概率量子克隆 |
Quantum state discrimination theorem based on probabilistic cloning |
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| ZHANG WenHai,DAI JieLin,CAO ZhuoLiang,YANG Ming.Quantum state discrimination theorem based on probabilistic cloning[J].Scientia Sinica Pysica,Mechanica & Astronomica,2011(7):850-854. |
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| Authors: | ZHANG WenHai DAI JieLin CAO ZhuoLiang YANG Ming |
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| Institution: | 1 Department of Physics, Huainan Normal University, Huainan 232001, China,＂ 2 Department of Physics and Electronic Engineering, Hefei Teachers College, Hefei 230601, China; 3 School of Physics and Material Science, Anhui University, Hefei 230039, China |
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| Abstract: | Based on the probabilistic quantum cloning, the well-known Helstrom bound is derived and the IDP limit is generalized in quantum state discrimination theory. By exploring the unitary transformation of the optimal probabilistic quantum cloning, the general unitary transformations of the Helstrom bound and the general IDP limit are presented. For the explicit input states, the explicit unitary transformations enabling to realize two measures in experiment are provided. |
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| Keywords: | quantum state discrimination POVM measurement Helstrom bound IDP limit probabilistic quantumcloning |
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