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Entropy 2015, 17(10), 6743-6752; doi:10.3390/e17106743

Quantum Secure Direct Communication Based on Dense Coding and Detecting Eavesdropping with Four-Particle Genuine Entangled State

1
School of Computer, Beijing University of Posts and Telecommunications, Beijing 100876, China
2
Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China
3
Science and Technology on Communication Security Laboratory, Sichuan 610041, China
*
Author to whom correspondence should be addressed.
Academic Editors: Demosthenes Ellinas, Giorgio Kaniadakis, Jiannis Pachos and Antonio M. Scarfone
Received: 27 March 2015 / Revised: 13 August 2015 / Accepted: 19 August 2015 / Published: 30 September 2015
(This article belongs to the Special Issue Quantum Computation and Information: Multi-Particle Aspects)
View Full-Text   |   Download PDF [875 KB, uploaded 30 September 2015]   |  

Abstract

A novel quantum secure direct communication protocol based on four-particle genuine entangled state and quantum dense coding is proposed. In this protocol, the four-particle genuine entangled state is used to detect eavesdroppers, and quantum dense coding is used to encode the message. Finally, the security of the proposed protocol is discussed. During the security analysis, the method of entropy theory is introduced, and two detection strategies are compared quantitatively by comparing the relationship between the maximal information that the eavesdroppers (Eve) can obtain, and the probability of being detected. Through the analysis we can state that our scheme is feasible and secure. View Full-Text
Keywords: quantum secure direct communication; four-particle genuine entangled state; eavesdropping detection; quantum dense coding quantum secure direct communication; four-particle genuine entangled state; eavesdropping detection; quantum dense coding
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Li, J.; Pan, Z.; Sun, F.; Chen, Y.; Wang, Z.; Shi, Z. Quantum Secure Direct Communication Based on Dense Coding and Detecting Eavesdropping with Four-Particle Genuine Entangled State. Entropy 2015, 17, 6743-6752.

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