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Proceedings Paper

Free space quantum system based on quantum secure direct communication
Author(s): Hua Ge; Wenyu Liu
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Paper Abstract

A new practical free space quantum communication system is proposed, it is based on the principle of quantum secure direct communication. Quantum cryptography is a practical method to realize free space optical communication. Different from the existing free space quantum key distribution communication system, the free space quantum secure direct communication is deterministic and the system is more simple. In this paper, a new structure of four transmitting channels is prensented, this structure could increase the security and capacity of system. The setup of transmitter and receiver of each transmitting channel is discussed in detail, and the communication process is analyzed. The result shows that this free space quantum system could be realized and can work over long distance.

Paper Details

Date Published: 10 November 2007
PDF: 5 pages
Proc. SPIE 6795, Second International Conference on Space Information Technology, 67950I (10 November 2007); doi: 10.1117/12.773396
Show Author Affiliations
Hua Ge, Huazhong Univ. of Science and Technology (China)
Wuhan Univ. of Technology (China)
Wenyu Liu, Huazhong Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 6795:
Second International Conference on Space Information Technology
Cheng Wang; Shan Zhong; Jiaolong Wei, Editor(s)

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