Pirandola, Stefano orcid.org/0000-0001-6165-5615 (2021) Composable security for continuous variable quantum key distribution:Trust levels and practical key rates in wired and wireless networks. Physical Review Research. 043014. ISSN 2643-1564
Abstract
Continuous variable (CV) quantum key distribution (QKD) provides a powerful setting for secure quantum communications, thanks to the use of room-temperature off-the-shelf optical devices and the potential to reach much higher rates than the standard discrete-variable counterpart. In this paper, we provide a general framework for studying the composable finite-size security of CV-QKD with Gaussian-modulated coherent-state protocols under various levels of trust for the loss and noise experienced by the parties. Our paper considers both wired (i.e., fiber-based) and wireless (i.e., free-space) quantum communications. In the latter case, we show that high key rates are achievable for short-range optical wireless (LiFi) in secure quantum networks with both fixed and mobile devices. Finally, we extend our investigation to microwave wireless (WiFi) discussing security and feasibility of CV-QKD for very short-range applications.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Funding Information: The author would like to thank P. Papanastasiou, M. Ghalaii, C. Harney, and M. Tomamichel for discussions. This work was funded by the European Union's Horizon 2020 research and innovation programme under Grant agreement No. 820466 (Quantum-Flagship Project CiViQ: “Continuous Variable Quantum Communications”). Publisher Copyright: © 2021 Published by the American Physical Society |
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: | 23 Feb 2022 13:30 |
Last Modified: | 16 Oct 2024 18:15 |
Published Version: | https://doi.org/10.1103/PhysRevResearch.3.043014 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1103/PhysRevResearch.3.043014 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:184046 |
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Filename: PhysRevResearch.3.043014.pdf
Description: Composable security for continuous variable quantum key distribution: Trust levels and practical key rates in wired and wireless networks
Licence: CC-BY 2.5