中国物理B ›› 2015, Vol. 24 ›› Issue (1): 10302-010302.doi: 10.1088/1674-1056/24/1/010302
李默a b, Patcharapong Treeviriyanupabc, 张春梅a b, 银振强a b, 陈巍a b, 韩正甫a b
Li Mo (李默)a b, Patcharapong Treeviriyanupabc, Zhang Chun-Mei (张春梅)a b, Yin Zhen-Qiang (银振强)a b, Chen Wei (陈巍)a b, Han Zheng-Fu (韩正甫)a b
摘要:
In a quantum key distribution (QKD) system, the error rate needs to be estimated for determining the joint probability distribution between legitimate parties, and for improving the performance of key reconciliation. We propose an efficient error estimation scheme for QKD, which is called parity comparison method (PCM). In the proposed method, the parity of a group of sifted keys is practically analysed to estimate the quantum bit error rate instead of using the traditional key sampling. From the simulation results, the proposed method evidently improves the accuracy and decreases revealed information in most realistic application situations.
中图分类号: (Quantum cryptography and communication security)