Kumar, Rupesh, Spiller, Timothy Paul orcid.org/0000-0003-1083-2604, Wonfor, Adrian et al. (2 more authors) (2019) Experimental demonstration of single-shot quantum and classical signal transmission on single wavelength optical pulse. Scientific Reports. 11190. ISSN 2045-2322
Abstract
Advances in highly sensitive detection techniques for classical coherent communication systems have reduced the received signal power requirements to a few photons per bit. At this level one can take advantage of the quantum noise to create secure communication, using continuous variable quantum key distribution (CV-QKD). In this work therefore we embed CV-QKD signals within classical signals and transmit classical data and secure keys simultaneously over 25 km of optical fibre. This is achieved by using a novel coherent displacement state generator, which has the potential for being used in a wide range of quantum optical experiments. This approach removes the need for separate channels for quantum communication systems and allows reduced system bandwidth for a given communications specification. This demonstration therefore demonstrates a way of implementing direct quantum physical layer security within a conventional classical communications system, offering a major advance in term of practical and low cost implementation.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Author(s) 2019 |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 01 Aug 2019 11:10 |
Last Modified: | 16 Oct 2024 15:54 |
Published Version: | https://doi.org/10.1038/s41598-019-47699-z |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1038/s41598-019-47699-z |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:149239 |
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Description: Experimental demonstration of single-shot quantum and classical signal transmission on single wavelength optical pulse
Licence: CC-BY 2.5