Research on the Application of Four Dimensional MDI-QKD Protocol Based on Phase Polarization Coding in Quantum Communication Systems
Yanyan Chen · 2023
Based on the analysis of the security performance and existing problems of quantum key distribution (QKD) protocol and measurement device independent quantum key distribution protocol (MDI-QKD), this article proposes a four-dimensional MDI-QKD scheme based on phase polarization hybrid encoding, combining phase polarization encoding, quantum state fusion and segmentation principles, and high-dimensional MDI-QKD scheme, and designs a matching four-dimensional simulation model. The simulation results show that under different polarization dismatch parameters, the performance of the four-dimensional MDI-QKD scheme based on hybrid encoding has been significantly improved in terms of key generation rate and secure communication distance.