Efficient error estimation in quantum key distribution<xref ref-type="fn" rid="cpb140409fn1">*</xref>

Efficient error estimation in quantum key distribution*

Li Mo^a),^b), Patcharapong Treeviriyanupab^c), Zhang Chun-Mei^a),^b), Yin Zhen-Qiang^a),^b)†, Chen Wei^a),^b)‡, Han Zheng-Fu^a),^b)

Fig. 1. The schematics of two methods. In the traditional method, the sent message the disclosed sifted keys is randomly chosen from the sifted keys. In the PCM method, the sent message parity information is calculated group by group from the sifted keys.