Papanastasiou, Panagiotis, Weedbrook, Christian and Pirandola, Stefano orcid.org/0000-0001-6165-5615 (2018) Continuous-variable quantum key distribution in fast fading channels. Physical Review A. ISSN 1094-1622
Abstract
We investigate the performance of several continuous-variable quantum key distribution protocols in the presence of fading channels. These are lossy channels whose transmissivity changes according to a probability distribution. This is typical in communication scenarios where remote parties are connected by free-space links subject to atmospheric turbulence. In this work, we assume the worst-case scenario where an eavesdropper has full control of a fast fading process, so that she chooses the instantaneous transmissivity of a channel, while the remote parties can only detect the mean statistical process. In our study, we consider coherent-state protocols run in various configurations, including the one-way switching protocol in reverse reconciliation, the measurement-device-independent protocol in the symmetric configuration and a three-party measurement-device-independent network. We show that, regardless of the advantage given to the eavesdropper (full control of fading), these protocols can still achieve high rates.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | ©2018 American Physical Society |
Keywords: | quant-ph |
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: | 18 Apr 2018 09:20 |
Last Modified: | 16 Oct 2024 14:40 |
Published Version: | https://doi.org/10.1103/PhysRevA.97.032311 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1103/PhysRevA.97.032311 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:129751 |