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Distributed sampling, quantum communication witnesses, and measurement incompatibility
dc.contributor.author | Guerini, Leonardo [UNESP] | |
dc.contributor.author | Quintino, Marco Túlio | |
dc.contributor.author | Aolita, Leandro | |
dc.date.accessioned | 2020-12-12T01:44:18Z | |
dc.date.available | 2020-12-12T01:44:18Z | |
dc.date.issued | 2019-10-14 | |
dc.identifier | http://dx.doi.org/10.1103/PhysRevA.100.042308 | |
dc.identifier.citation | Physical Review A, v. 100, n. 4, 2019. | |
dc.identifier.issn | 2469-9934 | |
dc.identifier.issn | 2469-9926 | |
dc.identifier.uri | http://hdl.handle.net/11449/199601 | |
dc.description.abstract | We study prepare-and-measure experiments where the sender (Alice) receives trusted quantum inputs but has an untrusted state-preparation device and the receiver (Bob) has a fully untrusted measurement device. A distributed-sampling task naturally arises in this scenario, where the goal is for Alice and Bob to reproduce the statistics of his measurements on her quantum inputs using a fixed communication channel. Their performance of this task can certify quantum communication (QC), and this is formalized by measurement-device-independent QC witnesses. Furthermore, we prove that QC can provide an advantage (over classical communication) for distributed sampling if and only if Bob's measurements are incompatible. This gives an operational interpretation to measurement incompatibility and motivates a generalized notion of it related to a subset of quantum states. Our findings have both fundamental and applied implications. | en |
dc.description.sponsorship | Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ) | |
dc.description.sponsorship | Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) | |
dc.language.iso | eng | |
dc.relation.ispartof | Physical Review A | |
dc.source | Scopus | |
dc.title | Distributed sampling, quantum communication witnesses, and measurement incompatibility | en |
dc.type | Artigo | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.contributor.institution | University of Tokyo | |
dc.contributor.institution | Universidade Federal do Rio de Janeiro (UFRJ) | |
dc.description.affiliation | International Centre for Theoretical Physics South American Institute for Fundamental Research Instituto de Física Teórica UNESP, R. Dr. Bento Teobaldo Ferraz 271 | |
dc.description.affiliation | Department of Physics Graduate School of Science University of Tokyo, Hongo 7-3-1 | |
dc.description.affiliation | Instituto de Física Universidade Federal do Rio de Janeiro, P.O. Box 68528 | |
dc.description.affiliationUnesp | International Centre for Theoretical Physics South American Institute for Fundamental Research Instituto de Física Teórica UNESP, R. Dr. Bento Teobaldo Ferraz 271 | |
dc.identifier.doi | 10.1103/PhysRevA.100.042308 | |
dc.description.sponsorshipId | FAPERJ: JCN E-26/202.701/2018 | |
dc.description.sponsorshipId | CAPES: PROCAD2013 | |
dc.identifier.scopus | 2-s2.0-85074448939 |

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