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European Conference on Optical Communication

PON topology analysis for subcarrier multiplexed quantum key distribution

J. Capmany, Carlos R. Fernández‐Pousa

Published Sep 1, 2010• 0 citations
Publisher

Abstract

We analyze the performance of different Passive Optical Network (PON) topologies for the distribution of multiuser quantum keys using subcarrier multiplexing and BB84 protocol in terms of the achievable Quantum Bit Error Rate (QBER) and the useful key distribution rate.
DOI
10.1109/ecoc.2010.5621307

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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.