Unconditional security of relativistic quantum key distribution protocol

Sushuai Zhuang; Li Yang

doi:10.1117/12.871454

4 November 2010 Unconditional security of relativistic quantum key distribution protocol

Sushuai Zhuang, Li Yang

Proceedings Volume 7846, Quantum and Nonlinear Optics; 78460I (2010) https://doi.org/10.1117/12.871454
Event: Photonics Asia 2010, 2010, Beijing, China

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.

Citation Download Citation

Sushuai Zhuang and Li Yang "Unconditional security of relativistic quantum key distribution protocol", Proc. SPIE 7846, Quantum and Nonlinear Optics, 78460I (4 November 2010); https://doi.org/10.1117/12.871454

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