Fu-Chen Zhu

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Su-Juan Qin, Fei Gao, Qiao-Yan Wen, and Fu-Chen Zhu (1. State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, 100876, China) (2. School of Science, Beijing University of Posts and Telecommunications, Beijing, 100876, China) (3. National Laboratory for Modern Communications, P.O.Box 810,(More)
Grover’s operator in the two-qubit case can transform a basis into its conjugated basis. A permutation operator can transform a state in the two conjugated bases into its orthogonal state. These properties are included in a threshold quantum protocol. The proposed threshold quantum protocol is secure based the proof that the legitimate participators can(More)
Two misuses of one-time pad in improving the efficiency of quantum communication are pointed out. One happens when using some message bits to encrypt others, the other exists because the key bits are not truly random. Both of them result in the decrease of security. Therefore, one-time pad should be used carefully in designing quantum communication(More)
We show a quantum sharing of classical secret protocol using EPR pairs. Instead of distributing entangled particles to every player and letting them make a measurement in different bases randomly, we employ the entangled particles as a carrier to record the synthetical operations of all players. Even in the case of multi-party secret sharing, two-particle(More)
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