Effect of quantum noise on deterministic joint remote state preparation of a qubit state via a GHZ channel

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• 作者：Ming-Ming Wang ; Zhi-Guo Qu
• 关键词：Quantum secure communication ; Quantum noise ; Deterministic joint remote state preparation ; Fidelity
• 刊名：Quantum Information Processing
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：15
• 期：11
• 页码：4805-4818
• 全文大小：1,129 KB
• 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
• 卷排序：15

文摘

Quantum secure communication brings a new direction for information security. As an important component of quantum secure communication, deterministic joint remote state preparation (DJRSP) could securely transmit a quantum state with 100 % success probability. In this paper, we study how the efficiency of DJRSP is affected when qubits involved in the protocol are subjected to noise or decoherence. Taking a GHZ-based DJRSP scheme as an example, we study all types of noise usually encountered in real-world implementations of quantum communication protocols, i.e., the bit-flip, phase-flip (phase-damping), depolarizing and amplitude-damping noise. Our study shows that the fidelity of the output state depends on the phase factor, the amplitude factor and the noise parameter in the bit-flip noise, while the fidelity only depends on the amplitude factor and the noise parameter in the other three types of noise. And the receiver will get different output states depending on the first preparer’s measurement result in the amplitude-damping noise. Our results will be helpful for improving quantum secure communication in real implementation.