Multi-qudit state sharing via various high-dimensional Bell channels

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• 作者：Yu-zhen Wei (1)
  Min Jiang (1)
  
  1. School of Electronics and Information Engineering ; Soochow University ; Suzhou ; 215006 ; People鈥檚 Republic of China
  
• 关键词：Quantum state sharing ; Quantum secret sharing ; Quantum information ; Bell state
• 刊名：Quantum Information Processing
• 出版年：2015
• 出版时间：March 2015
• 年：2015
• 卷：14
• 期：3
• 页码：1091-1102
• 全文大小：243 KB
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• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Physics
  Mathematics
  Engineering, general
  Computer Science, general
  Characterization and Evaluation Materials
  
• 出版者：Springer Netherlands
• ISSN：1573-1332

文摘

In this paper, an innovative and efficient scheme is presented for multi-participants sharing arbitrary \(n+1\) -qudit states with two-qudit maximally entangled Bell channels under the control of \(p\) agents. After the sender (Alice) performs one GHZ-state measurement on her qudits, and each controller (all Bobs) makes a single-qudit measurement, the recipient (Charlie) only needs to operate a single-qudit unitary transformation based on the classical information from the sender and all controllers. This scheme is further expanded to deal with how to use non-maximally entangled Bell channels where an additional multi-qudit unitary operation is operated. Our result demonstrates that it is possible to share multi-qudit state under supervision with only two-qudit entangled Bell channels which makes it convenient in a practical application.