Security Performance Analysis of Quantum Key Distribution Protocol Based on Depolarization Channel

Abstract

Abstract: The security performance of quantum key distribution protocol mainly refers to the maximum secure key generation rate that the protocol can support under certain channel conditions, and depolarization channel is a common channel model in quantum information security analysis. The security performance of BB84 protocol and device-independent protocol in depolarization channel is deduced and simulated by using quantum information theory. Furthermore, the relationship between the security key generation rate, channel parameters and light source model of the two protocols in a more practical situation is given by combining the weak coherent state light source and decoy state scheme. The results can be used to theoretically simulate the security key generation rate under the condition of long-distance quantum key distribution and establish a theoretical basis for further security analysis and experimental implementation.

Key words: quantum optics, quantum key distribution, depolarizing channel, secure key rate

CLC Number:

TN918.1

ZHANG Ziping1,LIU Guojun1,LU Xu2，HUANG Xing3，LIU Yun4. Security Performance Analysis of Quantum Key Distribution Protocol Based on Depolarization Channel[J]. Chinese Journal of Quantum Electronics, 2019, 36(4): 464-470.

References

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