一种基于优势提取的相位匹配量子密钥分发方法
By employing advantage extraction techniques and bit error rate estimation in phase-matched quantum key distribution, the problem of unsatisfactory performance under finite code lengths is solved, and the performance of the system under long distances and high background bit error rates is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NANJING UNIV OF POSTS & TELECOMM
- Filing Date
- 2023-08-30
- Publication Date
- 2026-07-17
AI Technical Summary
Existing phase-matched quantum key distribution protocols do not perform well under finite code length conditions, especially under long-distance and high background bit error rate conditions, where performance bottlenecks exist.
Employing advantage extraction technology, the original key is retained and updated after successful events are obtained between Alice and Bob in communication and the preset conditions are met. The amount of information eavesdropper is estimated by combining the bit error rate under X, Y, and Z bases, and key error correction and security amplification are performed.
It significantly improves the performance of phase-matched quantum key distribution, especially under conditions of finite number of pulses and high background bit error rate, thereby enhancing the security and efficiency of the system.
Smart Images
Figure CN117200999B_ABST