Fault-tolerant Remote Quantum Entanglement Establishment for Secure Quantum Communications

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• 作者：Chia-Wei Tsai ; Jason Lin
• 刊名：International Journal of Theoretical Physics
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：55
• 期：7
• 页码：3200-3206
• 全文大小：312 KB
• 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
• 卷排序：55

文摘

This work presents a strategy for constructing long-distance quantum communications among a number of remote users through collective-noise channel. With the assistance of semi-honest quantum certificate authorities (QCAs), the remote users can share a secret key through fault-tolerant entanglement swapping. The proposed protocol is feasible for large-scale distributed quantum networks with numerous users. Each pair of communicating parties only needs to establish the quantum channels and the classical authenticated channels with his/her local QCA. Thus, it enables any user to communicate freely without point-to-point pre-establishing any communication channels, which is efficient and feasible for practical environments.KeywordsQuantum cryptographyQuantum entanglementQuantum network