Mountogiannakis, Alexander George, Papanastasiou, Panagiotis and Pirandola, Stefano orcid.org/0000-0001-6165-5615 (2022) Data post-processing for the one-way heterodyne protocol under composable finite-size security. Physical Review A. 042606. ISSN 1094-1622
Abstract
The performance of a practical continuous-variable (CV) quantum key distribution (QKD) protocol depends significantly, apart from the loss and noise of the quantum channel, on the post-processing steps which lead to the extraction of the final secret key. A critical step is the reconciliation process, especially when one assumes finite-size effects in a composable framework. Here, we focus on the Gaussian-modulated coherent-state protocol with heterodyne detection in a high signal-to-noise ratio regime. We simulate the quantum communication process and we post-process the output data by applying parameter estimation, error correction (using high-rate, non-binary low-density parity-check codes), and privacy amplification. This allows us to study the performance for practical implementations of the protocol and optimize the parameters connected to the steps above. We also present an associated Python library performing the steps above.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | ©2022 American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details |
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: | 07 Oct 2022 11:40 |
Last Modified: | 16 Oct 2024 18:46 |
Published Version: | https://doi.org/10.1103/PhysRevA.106.042606 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1103/PhysRevA.106.042606 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:191837 |