Quantum cryptographic system with reduced data loss

摘要: A secure method for distributing a random cryptographic key with reduced data loss. Traditional quantum distribution systems employ similar probabilities the different communication modes and thus reject at least half of transmitted data. The invention substantially reduces amount discarded (those that are encoded decoded in e.g. using operators) without compromising security by significantly modes. Data is separated into various sets according to actual operators used encoding decoding process error rate each set determined individually. increases BB84 scheme proposed Bennett Brassard 1984. Using invention, number signals can be doubled asymptotically.