中国物理B ›› 2017, Vol. 26 ›› Issue (2): 20303-020303.doi: 10.1088/1674-1056/26/2/020303

• GENERAL • 上一篇    下一篇

Round-robin differential quadrature phase-shift quantum key distribution

Chun Zhou(周淳), Ying-Ying Zhang(张莹莹), Wan-Su Bao(鲍皖苏), Hong-Wei Li(李宏伟), Yang Wang(汪洋), Mu-Sheng Jiang(江木生)   

  1. 1 Zhengzhou Information Science and Technology Institute, Zhengzhou 450001, China;
    2 Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:2016-09-01 修回日期:2016-10-17 出版日期:2017-02-05 发布日期:2017-02-05
  • 通讯作者: Wan-Su Bao E-mail:2010thzz@sina.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61505261 and 11304397) and the National Basic Research Program of China (Grant No. 2013CB338002).

Round-robin differential quadrature phase-shift quantum key distribution

Chun Zhou(周淳)1,2, Ying-Ying Zhang(张莹莹)1,2, Wan-Su Bao(鲍皖苏)1,2, Hong-Wei Li(李宏伟)1,2, Yang Wang(汪洋)1,2, Mu-Sheng Jiang(江木生)1,2   

  1. 1 Zhengzhou Information Science and Technology Institute, Zhengzhou 450001, China;
    2 Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
  • Received:2016-09-01 Revised:2016-10-17 Online:2017-02-05 Published:2017-02-05
  • Contact: Wan-Su Bao E-mail:2010thzz@sina.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61505261 and 11304397) and the National Basic Research Program of China (Grant No. 2013CB338002).

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摘要： Recently, a round-robin differential phase-shift (RRDPS) protocol was proposed [Nature 509, 475 (2014)], in which the amount of leakage is bounded without monitoring the signal disturbance. Introducing states of the phase-encoded Bennett-Brassard 1984 protocol (PE-BB84) to the RRDPS, this paper presents another quantum key distribution protocol called round-robin differential quadrature phase-shift (RRDQPS) quantum key distribution. Regarding a train of many pulses as a single packet, the sender modulates the phase of each pulse by one of 0,π/2,π,3π/2, then the receiver measures each packet with a Mach-Zehnder interferometer having a phase basis of 0 or π/2. The RRDQPS protocol can be implemented with essential similar hardware to the PE-BB84, so it has great compatibility with the current quantum system. Here we analyze the security of the RRDQPS protocol against the intercept-resend attack and the beam-splitting attack. Results show that the proposed protocol inherits the advantages arising from the simplicity of the RRDPS protocol and is more robust against these attacks than the original protocol.

关键词: round-robin differential phase-shift protocol, quantum key distribution, intercept-resend attack, beam-splitting attack

Abstract: Recently, a round-robin differential phase-shift (RRDPS) protocol was proposed [Nature 509, 475 (2014)], in which the amount of leakage is bounded without monitoring the signal disturbance. Introducing states of the phase-encoded Bennett-Brassard 1984 protocol (PE-BB84) to the RRDPS, this paper presents another quantum key distribution protocol called round-robin differential quadrature phase-shift (RRDQPS) quantum key distribution. Regarding a train of many pulses as a single packet, the sender modulates the phase of each pulse by one of 0,π/2,π,3π/2, then the receiver measures each packet with a Mach-Zehnder interferometer having a phase basis of 0 or π/2. The RRDQPS protocol can be implemented with essential similar hardware to the PE-BB84, so it has great compatibility with the current quantum system. Here we analyze the security of the RRDQPS protocol against the intercept-resend attack and the beam-splitting attack. Results show that the proposed protocol inherits the advantages arising from the simplicity of the RRDPS protocol and is more robust against these attacks than the original protocol.

Key words: round-robin differential phase-shift protocol, quantum key distribution, intercept-resend attack, beam-splitting attack

中图分类号:  (Quantum cryptography and communication security)

  • 03.67.Dd
03.67.Hk (Quantum communication) 42.50.Ex (Optical implementations of quantum information processing and transfer)