Pirandola, Stefano orcid.org/0000-0001-6165-5615 (2020) General upper bound for distributing conferencing keys in arbitrary quantum networks. IET Quantum Communication. pp. 22-25. ISSN 2632-8925
Abstract
Secure quantum conferencing refers to a protocol where a number of trusted users generate exactly the same secret key to confidentially broadcast private messages. By a modification of the techniques first introduced in [Pirandola, arXiv:1601.00966], we derive a single-letter upper bound for the maximal rates of secure conferencing in a quantum network with arbitrary topology, where the users are allowed to perform the most powerful local operations assisted by two-way classical communications, and the quantum systems are routed according to the most efficient multipath flooding strategies. More precisely, our analysis allows us to bound the ultimate rates that are achievable by single-message multiple-multicast protocols, where N senders distribute N independent secret keys, and each key is to be shared with an ensemble of M receivers.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Keywords: | quant-ph,math-ph,math.MP |
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: | 20 Jul 2020 15:40 |
Last Modified: | 16 Oct 2024 16:48 |
Published Version: | https://doi.org/10.1049/iet-qtc.2020.0006 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1049/iet-qtc.2020.0006 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:163404 |