Controlled Deterministic Secure Quantum Communication Protocol Based on Three-Particle GHZ States in X-Basis*
Yan Zuo Chang, Shibin Zhang, Lili Yan +1 more
Abstract A controlled deterministic secure quantum communication (CDSQC) protocol is proposed based on three-particle GHZ state in X-basis. Only X-basis and Z 1 Z 2 X 3 -basis (composed of Z-basis and X-basis) measurement are required, which makes the scheme more convenient than others in practical applications. By distributing a random key between both sides of the communication and performing classical XOR operation, we realize a one-time-pad scheme, therefore our protocol achieves unconditional secure. Because only user with legitimate identity string can decrypt the secret, our protocol can resist man-in-the middle attack. The three-particle GHZ state in X-basis is used as decoy photons to detect eavesdropping. The detection rate reaches 75% per qubit.
Communications in Theoretical Physics•Mar 1, 2015•6 citations