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Conference on Lasers and Electro-Optics

High-Speed Quantum Key Distribution with Wavelength-Division Multiplexing on Integrated Photonic Devices

Alasdair B. Price, Philip Sibson, Chris Erven, John Rarity, Mark G. Thompson

Published Jan 1, 2018• 7 citations
Publisher

Abstract

We experimentally implement a compact and practical solution for wavelength-division multiplexed quantum key distribution using integrated photonics. This increases secret key rates and allows for greater operational flexibility to meet network user requirements.
DOI
10.1364/cleo_at.2018.jth2a.24

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Quantum key distribution (QKD) systems can generate unconditionally secure common keys between remote users. Improvements of QKD performance, particularly in key generation rate, have been required to meet current network traffic. A high-speed QKD system should be equipped with low-loss receivers with high visibility, highly efficient photon detectors with small dark count probability. A solution to these issues is to employ planar lightwave circuit (PLC) interferometers, single photon detection circuits and modules, together with multi-wavelength channels transmission using wavelength division multiplexing (WDM) technique.
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