Optical scheme for realization of optimal unambiguous state discrimination of the JS limit

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• 作者：WenHai Zhang (1)
  LongBao Yu (2)
  ZhuoLiang Cao (2)
  Liu Ye (3)
  
• 关键词：quantum state discrimination ; optimal unambiguous discrimination ; JS limit ; optimal probabilistic quantum cloning
• 刊名：SCIENCE CHINA Physics, Mechanics & Astronomy
• 出版年：2013
• 出版时间：March 2013
• 年：2013
• 卷：56
• 期：3
• 页码：606-609
• 全文大小：470KB
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• 作者单位：WenHai Zhang (1)
  LongBao Yu (2)
  ZhuoLiang Cao (2)
  Liu Ye (3)
  
  1. Department of Physics, Huainan Normal University, Huainan, 232038, China
  2. Department of Physics and Electronic Engineering, Hefei Normal University, Hefei, 230061, China
  3. School of Physics and Material Science, Anhui University, Hefei, 230039, China
  
• ISSN：1869-1927

文摘

We exploit optimal probabilistic cloning to rederive the JS limit. Dependent on the formulation given by the optimal probabilistic cloning, the explicit transformation of a measure of the JS limit is presented. Based on linear optical devices, we propose an experimentally feasible scheme to implement the JS limit measure of a general pair of two nonorthogonal quantum states. The success probability of the proposed scheme is unity.