Controlled Deterministic Secure Quantum Communication Protocol Based on Three-Particle GHZ States in X-Basis

A controlled deterministic secure quantum communication（CDSQC） protocol is proposed based on threeparticle GHZ state in X-basis.Only X-basis and Z1Z2X3-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.