Quantum steering beyond instrumental causal networks
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRN |
Texto Completo: | https://repositorio.ufrn.br/handle/123456789/30210 |
Resumo: | We theoretically predict, and experimentally verify with entangled photons, that outcome communication is not enough for hidden-state models to reproduce quantum steering. Hidden-state models with outcome communication correspond, in turn, to the well-known instrumental processes of causal inference but in the one-sided device-independent scenario of one black-box measurement device and one wellcharacterized quantum apparatus. We introduce one-sided device-independent instrumental inequalities to test against these models, with the appealing feature of detecting entanglement even when communication of the black box’s measurement outcome is allowed.We find that, remarkably, these inequalities can also be violated solely with steering, i.e., without outcome communication. In fact, an efficiently computable formal quantifier—the robustness of noninstrumentality—naturally arises, and we prove that steering alone is enough to maximize it. Our findings imply that quantum theory admits a stronger form of steering than known until now, with fundamental as well as practical potential implications |
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Nery, R. V.Taddei, M. M.Araújo, Rafael Chaves SoutoAolita, L.2020-09-28T14:01:20Z2020-09-28T14:01:20Z2018-04-06NERY, R. V.; TADDEI, M. M.; CHAVES, R.; AOLITA, L.. Quantum Steering Beyond Instrumental Causal Networks. Physical Review Letters, [S.L.], v. 120, n. 14, p. 140408, 6 abr. 2018. Disponível em: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.120.140408. Acesso em: 16 set. 2020. http://dx.doi.org/10.1103/physrevlett.120.140408.0031-90071079-7114https://repositorio.ufrn.br/handle/123456789/3021010.1103/physrevlett.120.140408American Physical SocietyQuantum communicationQuantum foundationsQuantum nonlocalityQuantum opticsResource theoriesQuantum steering beyond instrumental causal networksinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleWe theoretically predict, and experimentally verify with entangled photons, that outcome communication is not enough for hidden-state models to reproduce quantum steering. Hidden-state models with outcome communication correspond, in turn, to the well-known instrumental processes of causal inference but in the one-sided device-independent scenario of one black-box measurement device and one wellcharacterized quantum apparatus. We introduce one-sided device-independent instrumental inequalities to test against these models, with the appealing feature of detecting entanglement even when communication of the black box’s measurement outcome is allowed.We find that, remarkably, these inequalities can also be violated solely with steering, i.e., without outcome communication. In fact, an efficiently computable formal quantifier—the robustness of noninstrumentality—naturally arises, and we prove that steering alone is enough to maximize it. Our findings imply that quantum theory admits a stronger form of steering than known until now, with fundamental as well as practical potential implicationsengreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNinfo:eu-repo/semantics/openAccessORIGINALQuantumSteeringBeyond_ARAUJO_2018.pdfQuantumSteeringBeyond_ARAUJO_2018.pdfArtigoapplication/pdf363873https://repositorio.ufrn.br/bitstream/123456789/30210/1/QuantumSteeringBeyond_ARAUJO_2018.pdf007021668d4ae30bf4bedf889db4528bMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/30210/2/license.txte9597aa2854d128fd968be5edc8a28d9MD52TEXTQuantumSteeringBeyond_ARAUJO_2018.pdf.txtQuantumSteeringBeyond_ARAUJO_2018.pdf.txtExtracted texttext/plain33939https://repositorio.ufrn.br/bitstream/123456789/30210/3/QuantumSteeringBeyond_ARAUJO_2018.pdf.txt55eefa694616b703fcc6911d42065cfaMD53THUMBNAILQuantumSteeringBeyond_ARAUJO_2018.pdf.jpgQuantumSteeringBeyond_ARAUJO_2018.pdf.jpgGenerated Thumbnailimage/jpeg1695https://repositorio.ufrn.br/bitstream/123456789/30210/4/QuantumSteeringBeyond_ARAUJO_2018.pdf.jpg324c23c64608b39af7e2783ffb7ea305MD54123456789/302102020-10-04 04:47:32.113oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2020-10-04T07:47:32Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false |
dc.title.pt_BR.fl_str_mv |
Quantum steering beyond instrumental causal networks |
title |
Quantum steering beyond instrumental causal networks |
spellingShingle |
Quantum steering beyond instrumental causal networks Nery, R. V. Quantum communication Quantum foundations Quantum nonlocality Quantum optics Resource theories |
title_short |
Quantum steering beyond instrumental causal networks |
title_full |
Quantum steering beyond instrumental causal networks |
title_fullStr |
Quantum steering beyond instrumental causal networks |
title_full_unstemmed |
Quantum steering beyond instrumental causal networks |
title_sort |
Quantum steering beyond instrumental causal networks |
author |
Nery, R. V. |
author_facet |
Nery, R. V. Taddei, M. M. Araújo, Rafael Chaves Souto Aolita, L. |
author_role |
author |
author2 |
Taddei, M. M. Araújo, Rafael Chaves Souto Aolita, L. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Nery, R. V. Taddei, M. M. Araújo, Rafael Chaves Souto Aolita, L. |
dc.subject.por.fl_str_mv |
Quantum communication Quantum foundations Quantum nonlocality Quantum optics Resource theories |
topic |
Quantum communication Quantum foundations Quantum nonlocality Quantum optics Resource theories |
description |
We theoretically predict, and experimentally verify with entangled photons, that outcome communication is not enough for hidden-state models to reproduce quantum steering. Hidden-state models with outcome communication correspond, in turn, to the well-known instrumental processes of causal inference but in the one-sided device-independent scenario of one black-box measurement device and one wellcharacterized quantum apparatus. We introduce one-sided device-independent instrumental inequalities to test against these models, with the appealing feature of detecting entanglement even when communication of the black box’s measurement outcome is allowed.We find that, remarkably, these inequalities can also be violated solely with steering, i.e., without outcome communication. In fact, an efficiently computable formal quantifier—the robustness of noninstrumentality—naturally arises, and we prove that steering alone is enough to maximize it. Our findings imply that quantum theory admits a stronger form of steering than known until now, with fundamental as well as practical potential implications |
publishDate |
2018 |
dc.date.issued.fl_str_mv |
2018-04-06 |
dc.date.accessioned.fl_str_mv |
2020-09-28T14:01:20Z |
dc.date.available.fl_str_mv |
2020-09-28T14:01:20Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
NERY, R. V.; TADDEI, M. M.; CHAVES, R.; AOLITA, L.. Quantum Steering Beyond Instrumental Causal Networks. Physical Review Letters, [S.L.], v. 120, n. 14, p. 140408, 6 abr. 2018. Disponível em: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.120.140408. Acesso em: 16 set. 2020. http://dx.doi.org/10.1103/physrevlett.120.140408. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufrn.br/handle/123456789/30210 |
dc.identifier.issn.none.fl_str_mv |
0031-9007 1079-7114 |
dc.identifier.doi.none.fl_str_mv |
10.1103/physrevlett.120.140408 |
identifier_str_mv |
NERY, R. V.; TADDEI, M. M.; CHAVES, R.; AOLITA, L.. Quantum Steering Beyond Instrumental Causal Networks. Physical Review Letters, [S.L.], v. 120, n. 14, p. 140408, 6 abr. 2018. Disponível em: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.120.140408. Acesso em: 16 set. 2020. http://dx.doi.org/10.1103/physrevlett.120.140408. 0031-9007 1079-7114 10.1103/physrevlett.120.140408 |
url |
https://repositorio.ufrn.br/handle/123456789/30210 |
dc.language.iso.fl_str_mv |
eng |
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eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
American Physical Society |
publisher.none.fl_str_mv |
American Physical Society |
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