Ottaviani, Carlo orcid.org/0000-0002-0032-3999, Lupo, Cosmo orcid.org/0000-0002-5227-4009, Laurenza, Riccardo et al. (1 more author) (2019) Modular network for high-rate quantum conferencing. Communications Physics. 118. ISSN 2399-3650
Abstract
One of the main open problems in quantum communication is the design of efficient quantum-secured networks. This is a challenging goal, because it requires protocols that guarantee both unconditional security and high communication rates, while increasing the number of users. In this scenario, continuous-variable systems provide an ideal platform where high rates can be achieved by using off-the-shelf optical components. At the same time, the measurement-device independent architecture is also appealing for its feature of removing a substantial portion of practical weaknesses. Driven by these ideas, here we introduce a modular design of continuous-variable network where each individual module is a measurement-device-independent star network. In each module, the users send modulated coherent states to an untrusted relay, creating multipartite secret correlations via a generalized Bell detection. Using one-time pad between different modules, the network users may share a quantum-secure conference key over arbitrary distances at constant rate.
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) > Computer Science (York) |
Depositing User: | Pure (York) |
Date Deposited: | 17 Sep 2019 09:20 |
Last Modified: | 01 Jan 2025 00:09 |
Published Version: | https://doi.org/10.1038/s42005-019-0209-6 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1038/s42005-019-0209-6 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:150928 |