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Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

Comparison of quantum key distribution over fiber optics network topologies

Eric Donkor

Published Apr 5, 2010• 1 citation
Publisher

Abstract

We present the characteristic performance of quantum key distribution over various fiber optic network topologies. The networks include the RING, BUS, and STAR. Quantum bit-error rate is determined for each network as function of number of users, and transmission distance. The trade off between number of users and transmission distance is presented. The model is compared with experiment results for bus network architecture for quantum key distribution.

DOI
10.1117/12.851879

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We present the characteristic performance of quantum key distribution over various fiber optic network topologies. The networks include the RING, BUS, and STAR. Quantum bit-error rate is determined for each network as function of number of users, and transmission distance. The trade off between number of users and transmission distance is presented. The model is compared with experiment results for bus network architecture for quantum key distribution.
We present and compare the characteristic performance of single-photons, correlatedphotons, and entangled-photons for quantum key distribution over various fiber optic network topologies. The networks include the RING, BUS, and STAR. Quantum biterror rate is determined for each network as function of number of users, and transmission distance. The trade-off between number of users and transmission distance is presented. The robustness of the QKD against eavesdropping is evaluated for each architecture.
The purpose of this paper is to compare the performance of four passive optical network topologies in implementing multi-user quantum key distribution, using 3 protocols proposed by quantum cryptography (B92, EPR, and SSP). The considered networks are the passive-star network, the optical-ring network based on the Signac interferometer, the wavelength-routed network, and the wavelength-addressed bus network. The quantum bit-error rate and sifted key rate for each of these topologies are analysed to determine their suitability for providing quantum key distribution-service to networks of various sizes. The efficiency of the three considered protocols is also determined.
In this paper, we explore the performance of two network topologies: the optical ring network based on the Sagnac Interferometer and the wavelength routed optical network. The performance of all three networks for multiuser quantum key distribution are then computer simulated and compared by quantum bit error rate (QBER) analysis. To the best of our knowledge, this is the first time system level analysis have been performed on the suitability of various optical networks for quantum key distribution.
The performance of four passive optical network topologies in implementing multi-user quantum key distribution is compared, using 3 protocols proposed by quantum cryptography (B92, EPR, SSP). The networks considered are the passive-star network, the optical-ring network based on the Sagnac interferometer, the wavelength-routed network, and the wavelength-addressed bus network . An analysis of the quantum bit-error rate and sifted key rate for each of these topologies is used to determine their suitability for providing quantum key distribution-service to networks of various sizes. The efficiency of the three considered protocols is also determinated.