Analysis of the differential-phase-shift-keying protocol in the quantum-key-distribution system

【摘要】 The analysis is based on the error rate and the secure communication rate as functions of distance for three quantum-key-distribution(QKD) protocols:the Bennett-Brassard 1984,the Bennett-Brassard-Mermin 1992,and the coherent differential-phase-shift keying(DPSK) protocols.We consider the secure communication rate of the DPSK protocol against an arbitrary individual attack,including the most commonly considered intercept-resend and photon-number splitting attacks,and concluded that the simple and efficient differential-phase-shift-keying protocol allows for more than 200 km of secure communication distance with high communication rates.更多还原

【Abstract】 The analysis is based on the error rate and the secure communication rate as functions of distance for three quantum-key-distribution(QKD) protocols:the Bennett-Brassard 1984,the Bennett-Brassard-Mermin 1992,and the coherent differential-phase-shift keying(DPSK) protocols.We consider the secure communication rate of the DPSK protocol against an arbitrary individual attack,including the most commonly considered intercept-resend and photon-number splitting attacks,and concluded that the simple and efficient differential-phase-shift-keying protocol allows for more than 200 km of secure communication distance with high communication rates.更多还原