Quantum cryptography on multi-user network architectures

Patrick D. Kumavor; Alan C. Beal; Susanne Yelin; Eric Donkor; Bing C. Wang

doi:10.1117/12.665651

12 May 2006 Quantum cryptography on multi-user network architectures

Patrick D. Kumavor, Alan C. Beal, Susanne Yelin, Eric Donkor, Bing C. Wang

Proceedings Volume 6244, Quantum Information and Computation IV; 62440J (2006) https://doi.org/10.1117/12.665651
Event: Defense and Security Symposium, 2006, Orlando (Kissimmee), Florida, United States

Abstract

Quantum cryptography applies the uncertainty principle and the no-cloning theorem to allow to parties to share a secret key over an ultra-secure link. Present quantum cryptography technologies provide encryption key distribution only between two users. However, practical implementations of encryption key distribution schemes require establishing secure quantum communications amongst multiple users. This paper looks at some of the advantages and drawbacks of some common network topologies that could be used in sending cryptographic keys across a network consisting of multiple users. These topologies are the star, ring, and bus networks. Their performances are compared and analyzed using quantum bit error rate analysis. The paper also presents an experimental demonstration of a six-user quantum key distribution network implemented on a bus topology.

Citation Download Citation

Patrick D. Kumavor, Alan C. Beal, Susanne Yelin, Eric Donkor, and Bing C. Wang "Quantum cryptography on multi-user network architectures", Proc. SPIE 6244, Quantum Information and Computation IV, 62440J (12 May 2006); https://doi.org/10.1117/12.665651

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