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Proceedings Paper

Unconditional security of relativistic quantum key distribution protocol
Author(s): Sushuai Zhuang; Li Yang
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Paper Abstract

Relativistic quantum key distribution (QKD) protocol is a kind of modified BB84 QKD protocol based on the principles of not only quantum mechanics but also special relativity. Its advantage compared with BB84 protocol is that all of the qubits could be used for key generation, and Alice and Bob are able to select any measuring bases. We prove its unconditional security against coherent attack via the method based on CSS codes: begin with a modified EPR based protocol which can be proved unconditionally secure, then reduce the protocol to a CSS codes based protocol. Finally, the CSS codes based protocol is demonstrated equivalent to the relativistic QKD protocol, and we arrived at the conclusion of the unconditional security of the final key.

Paper Details

Date Published: 4 November 2010
PDF: 8 pages
Proc. SPIE 7846, Quantum and Nonlinear Optics, 78460I (4 November 2010); doi: 10.1117/12.871454
Show Author Affiliations
Sushuai Zhuang, Graduate Univ. of the Chinese Academy of Sciences (China)
Li Yang, Graduate Univ. of the Chinese Academy of Sciences (China)

Published in SPIE Proceedings Vol. 7846:
Quantum and Nonlinear Optics
Qihuang Gong; Guang-Can Guo; Yuen-Ron Shen, Editor(s)

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