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Phys. Rev. A 68, 042315 (2003) [4 pages]

Controlled order rearrangement encryption for quantum key distribution

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Fu-Guo Deng1,2 and G. L. Long1,2,3,4,*
1Department of Physics, Tsinghua University, Beijing 100084, People’s Republic of China
2Key Laboratory For Quantum Information and Measurements, Beijing 100084, People’s Republic of China
3Center for Atomic and Molecular NanoSciences, Tsinghua University, Beijing 100084, People’s Republic of China
4Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, People’s Republic of China

Received 29 April 2003; published 14 October 2003

A technique is devised to perform orthogonal state quantum key distribution. In this scheme, entangled parts of a quantum information carrier are sent from Alice to Bob through two quantum channels. However, before the transmission, the order of the quantum information carrier in one channel is reordered so that Eve cannot steal useful information. At the receiver’s end, the order of the quantum information carrier is restored. The order rearrangement operation in both parties is controlled by a prior shared control key which is used repeatedly in a quantum key distribution session.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.68.042315
DOI:
10.1103/PhysRevA.68.042315
PACS:
03.67.Dd, 03.67.Hk

*Corresponding author. Electronic address: gllong@tsinghua.edu.cn

 
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