Probabilistic Quantum Information Splitting Based on the Non-maximally Entangled Four-Qubit State

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• 作者：Chen-ming Bai ; Yong-ming Li
• 关键词：Quantum information splitting ; Unitary transformation ; Probability ; Security
• 刊名：International Journal of Theoretical Physics
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：55
• 期：3
• 页码：1658-1667
• 全文大小：269 KB
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• 作者单位：Chen-ming Bai (1)
  Yong-ming Li (2)
  
  1. School of Mathematics and Information Science, Shannxi Normal University, Xi’an, 710119, China
  2. School of Computer Science, Shannxi Normal University, Xi’an, 710119, China
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Physics
  Quantum Physics
  Elementary Particles and Quantum Field Theory
  Mathematical and Computational Physics
  
• 出版者：Springer Netherlands
• ISSN：1572-9575

文摘

In this paper, we propose a scheme for quantum information splitting based on the non-maximally entangled four-qubit state in order to realize the splitting of the specific two-qubit state |ψ〉 _{A B} =x|00〉+y|11〉. The information splitter will safely share an state to the receiver with help of the controller. Through introducing an auxiliary system and applying several appropriate unitary transformations the information receiver can reconstruct the original state sent by the information splitter. Due to the non-maximally entangled four-qubit state, the total probability that the receiver obtains the original information is P. Furthermore, we discuss the relationship between the successful splitting probability and the concurrence of the entangled state and get a specific expression. In addition, the scheme is tested against external and internal attacks, and we define a function to characterise the security with the concurrence of the entanglement. Keywords Quantum information splitting Unitary transformation Probability Security