Special Issue Paper
A quantum secure direct communication protocol based on four-qubit cluster state
Article first published online: 10 APR 2013
Copyright © 2013 John Wiley & Sons, Ltd.
Security and Communication Networks
How to Cite
Li, J., Song, D., Li, R. and Lu, X. (2013), A quantum secure direct communication protocol based on four-qubit cluster state. Security Comm. Networks. doi: 10.1002/sec.711
- Article first published online: 10 APR 2013
- Manuscript Accepted: 22 NOV 2012
- Manuscript Revised: 23 SEP 2012
- Manuscript Received: 30 JUL 2012
- National Natural Science Foundation of China. Grant Numbers: 61100205, 61100208
- quantum secure direct communication;
- four-qubit cluster state;
- eavesdropping detection
We propose a quantum secure direct communication protocol utilizing four-qubit cluster state to enhance the efficiency of eavesdropping detection. In the security analysis, by applying the method of the entropy theory, we contrast our scheme to another two strategies, the Ping-pong protocol and the protocol using two particles of Einstein–Podolsky–Rosen pair as detection particles. The comparison results show that if the eavesdropper obtains the same amount of information, the presented quantum protocol strategy will have a larger detection probability than the other two. At last, the security of the proposed protocol is discussed. The analysis results indicate that the protocol in this paper is more secure. Copyright © 2013 John Wiley & Sons, Ltd.