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- W2960789421 abstract "Continuous-variable quantum key distribution (CVQKD) with a real local oscillator (LO) is confronted with new security problems due to the reference pulses transmitted together with quantum signals over the insecure quantum channel. In this paper, we propose a method of phase attack on reference pulses of the CVQKD with real LOs. Under the phase attack, the phase drifts of reference pulses are manipulated by eavesdroppers, and then the phase compensation error is increased. Consequently, the secret key rate is reduced due to the imperfect phase compensation for quantum signals. Based on the noise model of imperfect phase compensation, the practical security of the CVQKD under phase attack is analyzed. Besides, we propose an effective method to detect the intensity of phase attack, in which the deviation of phase compensation error on quantum signals and that on reference signals are monitored in real time. The simulation results show that the security analysis is accurate and the method of phase attack detection is feasible." @default.
- W2960789421 created "2019-07-23" @default.
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- W2960789421 date "2019-07-10" @default.
- W2960789421 modified "2023-10-17" @default.
- W2960789421 title "Practical security of the continuous-variable quantum key distribution with real local oscillators under phase attack" @default.
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- W2960789421 doi "https://doi.org/10.1364/oe.27.020621" @default.
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