5Bennett C H, Brassard G. Quantum cryptography: public- key distribution and coin tossing[A]. Proceedings of the IEEE International Conference on Computers, Systems and Signal Processing[C] . New York: IEEE, 1984.175 - 179.
6Ekert A K.Quantum cryptography based on Bell's throrem[J]. Phys Rev Lett, 1991,67:661 -663.
7Bennett C H. Quantum cryptography using any two nonorthogonal states [J]. Phys Rev Lett, 1992,68:3121 -3123.