QUANTUM KEY DISTRIBUTION METHOD AND COMMUNICATION DEVICE

摘要

It is possible to create a shared key whose safety is surely guaranteed while correcting a data error in the transmission path by using an error correction code having an extremely high characteristic. According to a quantum key distribution method, firstly, a communication device of the reception side corrects the data error of the reception data by using a parity inspection matrix for an "Irregular-LDPC code" which is determinate and has stable characteristic. The communication device of the reception side and the communication device of the transmission side discard a part of shared information according to the error correction information disclosed.