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Article: Resource theories of communication

TitleResource theories of communication
Authors
Keywordsquantum communication
quantum Shannon theory
quantum SWITCH
indefinite causal order
superposition of channels
Issue Date2020
PublisherIOP Publishing: Open Access Journals. The Journal's web site is located at http://iopscience.iop.org/1367-2630/
Citation
New Journal of Physics, 2020, v. 22, p. article no. 073014 How to Cite?
AbstractA series of recent works has shown that placing communication channels in a coherent superposition of alternative configurations can boost their ability to transmit information. Instances of this phenomenon are the advantages arising from the use of communication devices in a superposition of alternative causal orders, and those arising from the transmission of information along a superposition of alternative trajectories. The relation among these advantages has been the subject of recent debate, with some authors claiming that the advantages of the superposition of orders could be reproduced, and even surpassed, by other forms of superpositions. To shed light on this debate, we develop a general framework of resource theories of communication. In this framework, the resources are communication devices, and the allowed operations are (a) the placement of communication devices between the communicating parties, and (b) the connection of communication devices with local devices in the parties' laboratories. The allowed operations are required to satisfy the minimal condition that they do not enable communication independently of the devices representing the initial resources. The resource-theoretic analysis reveals that the aforementioned criticisms on the superposition of causal orders were based on an uneven comparison between different types of quantum superpositions, exhibiting different operational features.
Persistent Identifierhttp://hdl.handle.net/10722/284653
ISSN
2023 Impact Factor: 2.8
2023 SCImago Journal Rankings: 1.090
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorKristjánsson, H-
dc.contributor.authorChiribella, G-
dc.contributor.authorSalek, S-
dc.contributor.authorEbler, D-
dc.contributor.authorWilson, M-
dc.date.accessioned2020-08-07T09:00:45Z-
dc.date.available2020-08-07T09:00:45Z-
dc.date.issued2020-
dc.identifier.citationNew Journal of Physics, 2020, v. 22, p. article no. 073014-
dc.identifier.issn1367-2630-
dc.identifier.urihttp://hdl.handle.net/10722/284653-
dc.description.abstractA series of recent works has shown that placing communication channels in a coherent superposition of alternative configurations can boost their ability to transmit information. Instances of this phenomenon are the advantages arising from the use of communication devices in a superposition of alternative causal orders, and those arising from the transmission of information along a superposition of alternative trajectories. The relation among these advantages has been the subject of recent debate, with some authors claiming that the advantages of the superposition of orders could be reproduced, and even surpassed, by other forms of superpositions. To shed light on this debate, we develop a general framework of resource theories of communication. In this framework, the resources are communication devices, and the allowed operations are (a) the placement of communication devices between the communicating parties, and (b) the connection of communication devices with local devices in the parties' laboratories. The allowed operations are required to satisfy the minimal condition that they do not enable communication independently of the devices representing the initial resources. The resource-theoretic analysis reveals that the aforementioned criticisms on the superposition of causal orders were based on an uneven comparison between different types of quantum superpositions, exhibiting different operational features.-
dc.languageeng-
dc.publisherIOP Publishing: Open Access Journals. The Journal's web site is located at http://iopscience.iop.org/1367-2630/-
dc.relation.ispartofNew Journal of Physics-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectquantum communication-
dc.subjectquantum Shannon theory-
dc.subjectquantum SWITCH-
dc.subjectindefinite causal order-
dc.subjectsuperposition of channels-
dc.titleResource theories of communication-
dc.typeArticle-
dc.identifier.emailChiribella, G: giulio@cs.hku.hk-
dc.identifier.emailEbler, D: eblerd@hku.hk-
dc.identifier.authorityChiribella, G=rp02035-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1088/1367-2630/ab8ef7-
dc.identifier.scopuseid_2-s2.0-85092754994-
dc.identifier.hkuros312273-
dc.identifier.volume22-
dc.identifier.spagearticle no. 073014-
dc.identifier.epagearticle no. 073014-
dc.identifier.isiWOS:000553805500001-
dc.publisher.placeUnited Kingdom-
dc.identifier.issnl1367-2630-

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