Probabilistic quantum relay communication in the noisy channel with analogous space-time code

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• 作者：Jinjing Shi (1) (3)
  Ronghua Shi (1)
  Ying Guo (1)
  Xiaoqi Peng (2)
  Moon Ho Lee (3)
  
• 关键词：Quantum relay ; Quantum communication ; Space ; time code ; Quantum channel
• 刊名：Quantum Information Processing
• 出版年：2013
• 出版时间：May 2013
• 年：2013
• 卷：12
• 期：5
• 页码：1859-1870
• 全文大小：323 KB
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• 作者单位：Jinjing Shi (1) (3)
  Ronghua Shi (1)
  Ying Guo (1)
  Xiaoqi Peng (2)
  Moon Ho Lee (3)
  
  1. School of Information Science and Engineering, Central South University, Changsha, 410083, China
  3. Institute of Information and Communication, Chonbuk National University, Chonju, 561-756, Korea
  2. Department of Information Science and Engineering, Hunan First Normal University, Changsha, 410205, China
  
• ISSN：1573-1332

文摘

Motivated by the space-time diversity transmission technique in wireless communications, a novel probabilistic quantum relay communication scheme in the quantum noisy channel is proposed in order to maximize the correct information transmission and the range of quantum communication, in which quantum signal sequences that carrying two-particle entangled states are transmitted from two senders to two relays and then retransmitted to the receiver after space-time encoded by relays. The quantum signal states can be restored via filtering out the channel noise with two-dimensional Bell measurements by the receiver. Analysis and discussions indicate that our scheme can increase and approximately double the range of quantum communication while not to reduce too much quantum signal-to-noise ratio, and meanwhile the security can be guaranteed under strongest collective attacks and LOCC attacks.