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Entropy 2015, 17(5), 2919-2931;

Three-Stage Quantum Cryptography Protocol under Collective-Rotation Noise

Department of Electrical and Computer Engineering, N308 Engr. Bldg. 1, University of Houston, Houston, TX 77204-4005, USA
Author to whom correspondence should be addressed.
Received: 31 March 2015 / Revised: 30 April 2015 / Accepted: 4 May 2015 / Published: 7 May 2015
(This article belongs to the Special Issue Quantum Cryptography)
Full-Text   |   PDF [413 KB, uploaded 7 May 2015]


Information security is increasingly important as society migrates to the information age. Classical cryptography widely used nowadays is based on computational complexity, which means that it assumes that solving some particular mathematical problems is hard on a classical computer. With the development of supercomputers and, potentially, quantum computers, classical cryptography has more and more potential risks. Quantum cryptography provides a solution which is based on the Heisenberg uncertainty principle and no-cloning theorem. While BB84-based quantum protocols are only secure when a single photon is used in communication, the three-stage quantum protocol is multi-photon tolerant. However, existing analyses assume perfect noiseless channels. In this paper, a multi-photon analysis is performed for the three-stage quantum protocol under the collective-rotation noise model. The analysis provides insights into the impact of the noise level on a three-stage quantum cryptography system. View Full-Text
Keywords: quantum cryptography; three-stage quantum protocol; multi-photon; collective-rotation noise quantum cryptography; three-stage quantum protocol; multi-photon; collective-rotation noise
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Wu, L.; Chen, Y. Three-Stage Quantum Cryptography Protocol under Collective-Rotation Noise. Entropy 2015, 17, 2919-2931.

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