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2007 Volume 16 Issue 11
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Zhao Feng, Fu Ming-Xing, Lu Yi-Qun, Liu Song-Hao. 2007: Influence of multi-photon pulses on practical differential-phase-shift quantum key distribution, Chinese Physics B, 16(11): 3402-3406.
Citation: Zhao Feng, Fu Ming-Xing, Lu Yi-Qun, Liu Song-Hao. 2007: Influence of multi-photon pulses on practical differential-phase-shift quantum key distribution, Chinese Physics B, 16(11): 3402-3406.
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Influence of multi-photon pulses on practical differential-phase-shift quantum key distribution

  • Laboratory of Photonic Information Technology, School for Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China;Department of Electronic and Information Engineering,Shaanxi University of Technology,

  • Department of Electronic and Information Engineering,Shaanxi University of Technology, Hanzhong 723003, China

  • Laboratory of Photonic Information Technology, School for Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China

  • Available Online: 30/11/2007
  • The influence of multi-photon pulses on practical differential-phase-shift quantum key distribution (DPS-QKD) is analysed. We have estimated the information which Eve obtained by PNS (photon-number splitting) attack and BS (beam splitting) attack. The result indicates that the PNS attack and BS attack will not limit the transmission distance as long as we select an appropriate mean photon number. Also, the maximum mean photon number under BS attack in practical DPS-QKD system and the set of practical assumptions about Eve's capabilities are presented.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Influence of multi-photon pulses on practical differential-phase-shift quantum key distribution

  • Available Online: 30/11/2007

Abstract: The influence of multi-photon pulses on practical differential-phase-shift quantum key distribution (DPS-QKD) is analysed. We have estimated the information which Eve obtained by PNS (photon-number splitting) attack and BS (beam splitting) attack. The result indicates that the PNS attack and BS attack will not limit the transmission distance as long as we select an appropriate mean photon number. Also, the maximum mean photon number under BS attack in practical DPS-QKD system and the set of practical assumptions about Eve's capabilities are presented.

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