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IEEE Photonics Conference

Coexistence of a quantum channel and classical channels in passive optical networks

Xun Wang, Il-Pyeong Hwang, Seung-Hyeon Ahn, Chang-Hee Lee

Published Oct 1, 2015• 1 citation
Publisher

Abstract

We investigate feasibility of coexistence of a quantum channel and classical channels in a single fiber for passive optical networks (PONs) based on time division multiplexing (TDM) or wavelength division multiplexing (WDM) technologies.
DOI
10.1109/ipcon.2015.7323632

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Future communications networks not only should enable massive exchange of classical bits, but also the transmission of quantum bits on which many quantum applications rely. This will be the key to offering quantum technologies in a cost-efficient way, and it should encompass the integration of quantum and classical networks at the core of existing optical communications networks, as well as at the access end of such networks. In this work, we cover a range of proposals that enable such an integration for one of the imminent applications of quantum technologies, i.e., quantum key distribution (QKD), by which users can securely exchange a secret key for their cryptographic needs. This will include using wavelength division multiplexing techniques to send quantum and classical data on the same fiber as well as wireless access for QKD users to passive optical networks. In each case, we explore optimal arrangements to find the best way forward for an amicable coexistence.
The use of quantm mechanisms in the service of voting security suffers from the problem that in order to generate keys for voters and verifiers a point to point connection has to be physically established for each pair, rendering this impractical. We thus propose using Point-to-Multipoint quantum key distribution (QKD) via time division multiplexing (TDM) and wavelength division multiplexing (WDM) in passive optical networks (PON) to improve both the deployment and security of online voting systems.
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