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Article: Experimental Transmission of Quantum Information Using a Superposition of Causal Orders

TitleExperimental Transmission of Quantum Information Using a Superposition of Causal Orders
Authors
KeywordsCoherent superpositions
High-fidelity
Intermediate node
Of quantum-information
Photonic systems
Issue Date2020
PublisherAmerican Physical Society. The Journal's web site is located at https://journals.aps.org/prl/
Citation
Physical Review Letters, 2020, v. 124 n. 3, p. 030502:1-030502:6 How to Cite?
AbstractCommunication in a network generally takes place through a sequence of intermediate nodes connected by communication channels. In the standard theory of communication, it is assumed that the communication network is embedded in a classical spacetime, where the relative order of different nodes is well defined. In principle, a quantum theory of spacetime could allow the order of the intermediate points between sender and receiver to be in a coherent superposition. Here we experimentally realize a tabletop simulation of this exotic possibility on a photonic system, demonstrating high-fidelity transmission of quantum information over two noisy channels arranged in a superposition of two alternative causal orders.
Persistent Identifierhttp://hdl.handle.net/10722/284652
ISSN
2019 Impact Factor: 8.385
2015 SCImago Journal Rankings: 3.731

 

DC FieldValueLanguage
dc.contributor.authorGuo, Y-
dc.contributor.authorHu, XM-
dc.contributor.authorHou, ZB-
dc.contributor.authorCao, H-
dc.contributor.authorCui, JM-
dc.contributor.authorLiu, BH-
dc.contributor.authorHuang, YF-
dc.contributor.authorLi, CF-
dc.contributor.authorGuo, GC-
dc.contributor.authorChiribella, G-
dc.date.accessioned2020-08-07T09:00:44Z-
dc.date.available2020-08-07T09:00:44Z-
dc.date.issued2020-
dc.identifier.citationPhysical Review Letters, 2020, v. 124 n. 3, p. 030502:1-030502:6-
dc.identifier.issn0031-9007-
dc.identifier.urihttp://hdl.handle.net/10722/284652-
dc.description.abstractCommunication in a network generally takes place through a sequence of intermediate nodes connected by communication channels. In the standard theory of communication, it is assumed that the communication network is embedded in a classical spacetime, where the relative order of different nodes is well defined. In principle, a quantum theory of spacetime could allow the order of the intermediate points between sender and receiver to be in a coherent superposition. Here we experimentally realize a tabletop simulation of this exotic possibility on a photonic system, demonstrating high-fidelity transmission of quantum information over two noisy channels arranged in a superposition of two alternative causal orders.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at https://journals.aps.org/prl/-
dc.relation.ispartofPhysical Review Letters-
dc.rightsPhysical Review Letters. Copyright © American Physical Society.-
dc.rightsCopyright [2020] by The American Physical Society. This article is available online at [http://dx.doi.org/10.1103/PhysRevLett.124.030502].-
dc.subjectCoherent superpositions-
dc.subjectHigh-fidelity-
dc.subjectIntermediate node-
dc.subjectOf quantum-information-
dc.subjectPhotonic systems-
dc.titleExperimental Transmission of Quantum Information Using a Superposition of Causal Orders-
dc.typeArticle-
dc.identifier.emailChiribella, G: giulio@cs.hku.hk-
dc.identifier.authorityChiribella, G=rp02035-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevLett.124.030502-
dc.identifier.pmid32031864-
dc.identifier.scopuseid_2-s2.0-85079080491-
dc.identifier.hkuros312269-
dc.identifier.volume124-
dc.identifier.issue3-
dc.identifier.spage030502:1-
dc.identifier.epage030502:6-
dc.publisher.placeUnited States-

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