Bahrani, S, Razavi, M orcid.org/0000-0003-4172-2125 and Salehi, JA (2015) Orthogonal Frequency-Division Multiplexed Quantum Key Distribution. Journal of Lightwave Technology, 33 (23). pp. 4687-4698. ISSN 0733-8724
Abstract
We propose orthogonal frequency-division multiplexing (OFDM), as a spectrally efficient multiplexing technique, for quantum key distribution at the core of trusted-node quantum networks. Two main schemes are proposed and analyzed in detail, considering system imperfections, specifically, time misalignment issues. It turns out that while multiple service providers can share the network infrastructure using the proposed multiplexing techniques, no gain in the total secret key generation rate is obtained if one uses conventional passive all-optical OFDM decoders. To achieve a linear increase in the key rate with the number of channels, an alternative active setup for OFDM decoding is proposed, which employs an optical switch in addition to conventional passive circuits. We show that by using our proposed decoder, the bandwidth utilization is considerably improved as compared to conventional wavelength-division multiplexing techniques.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2015 IEEE. This is an author produced version of a paper published in Journal of Lightwave Technology. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Quantum key distribution; orthogonal frequency division multiplexing; quantum networks |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) |
Funding Information: | Funder Grant number EU - European Union 277110 EPSRC EP/M506953/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 26 Feb 2015 12:08 |
Last Modified: | 20 Jul 2018 21:38 |
Status: | Published |
Publisher: | Institute of Electrical and Electronics Engineers |
Identification Number: | 10.1109/JLT.2015.2476821 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:83136 |