Laurenza, Riccardo, Lupo, Cosmo orcid.org/0000-0002-5227-4009, Lloyd, Seth et al. (1 more author) (2020) Dense coding capacity of a quantum channel. Physical Review Research. 023023. ISSN 2643-1564
Abstract
We consider the fundamental protocol of dense coding of classical information assuming that noise affects both the forward and backward communication lines between Alice and Bob. Assuming that this noise is described by the same quantum channel, we define its dense coding capacity by optimizing over all adaptive strategies that Alice can implement, while Bob encodes the information by means of Pauli operators. Exploiting techniques of channel simulation and protocol stretching, we are able to establish the dense coding capacity of Pauli channels in arbitrary finite dimension, with simple formulas for depolarizing and dephasing qubit channels.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020, Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. |
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: | 19 May 2020 12:50 |
Last Modified: | 16 Oct 2024 16:37 |
Published Version: | https://doi.org/10.1103/PhysRevResearch.2.023023 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1103/PhysRevResearch.2.023023 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:160958 |