Quantum secure direct communication scheme based on d- dimensional Bell entangled state

Pengfei Weng; Hong Chen; Xiaoxia Cai; Jian Chen; Hao Nie

doi:10.1117/12.2267537

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8 March 2017 Quantum secure direct communication scheme based on d- dimensional Bell entangled state

Pengfei Weng, Hong Chen, Xiaoxia Cai, Jian Chen, Hao Nie

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Proceedings Volume 10255, Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016; 102553L (2017) https://doi.org/10.1117/12.2267537
Event: Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016, 2016, Jinhua, Suzhou, Chengdu, Xi'an, Wuxi, China

Abstract

In order to improve the communication efficiency and security of Quantum Secure Direct Communication, a new Quantum Secure Direct Communication scheme based on d-dimension Bell entangled state is proposed. In the scheme, the receiver and the sender transport the d-dimensional Bell particles as secure test particles to ensure the security of communication. The receiver can calculate the security of the channel according to the measurement of d-dimensional Bell state particles, which is based on the entanglement properties of the d-dimensional Bell state. Secret information is transmitted through the other d-dimensional Bell state particles by dense coding technique. Then, the receiver can determine the security of the channel by comparing the measurements of the particles and makes a joint measurement of the transmitted particles to obtain secret information. Finally, the entropy theory is used to analyze the security of the protocol. Under the four dimensional Bell state, the transmission efficiency of the protocol is 90.90% and the efficiency of the quantum bit is 45.45%. The results show that the proposed scheme is safe and reliable and has high transmission efficiency.

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Pengfei Weng, Hong Chen, Xiaoxia Cai, Jian Chen, and Hao Nie "Quantum secure direct communication scheme based on d- dimensional Bell entangled state", Proc. SPIE 10255, Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016, 102553L (8 March 2017); https://doi.org/10.1117/12.2267537

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