International Journal of Quantum Information

CONTROLLED QUANTUM SECURE DIRECT COMMUNICATION WITH W STATE

Xiu‐Bo Chen, Qiaoyan Wen, Fen-Zhuo Guo, YING SUN, Gang Xu, Fu-Chen Zhu

Published Aug 1, 2008• 93 citations

Abstract

Utilizing W state, which is much more robust than GHZ state, we propose a protocol for three-party controlled quantum secure direct communication (QSDC). The feature of this protocol is that the sender encodes the secret message directly on a sequence of particle states and faithfully transmits them to an arbitrary one of two receivers without revealing any information to a potential eavesdropper. On the other hand, we construct the efficient quantum circuit to implement the QSDC by means of primitive operations in quantum computation.

DOI: 10.1142/s0219749908004195

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