Probing the non-classicality of temporal correlations

Correlations between spacelike separated measurements on entangled quantum systems are stronger than any classical correlations and are at the heart of numerous quantum technologies. In practice, however, spacelike separation is often not guaranteed and we typically face situations where measurement...

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Principais autores: Ringbauer, Martin, Araújo, Rafael Chaves Souto
Formato: article
Idioma:English
Publicado em: Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
Assuntos:
Quantum systems
Quantum information processing
Endereço do item:https://repositorio.ufrn.br/handle/123456789/30392
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spelling ri-123456789-303922020-10-18T07:53:50Z Probing the non-classicality of temporal correlations Ringbauer, Martin Araújo, Rafael Chaves Souto Quantum systems Quantum information processing Correlations between spacelike separated measurements on entangled quantum systems are stronger than any classical correlations and are at the heart of numerous quantum technologies. In practice, however, spacelike separation is often not guaranteed and we typically face situations where measurements have an underlying time order. Here we aim to provide a fair comparison of classical and quantum models of temporal correlations on a single particle, as well as timelike-separated correlations on multiple particles. We use a causal modeling approach to show, in theory and experiment, that quantum correlations outperform their classical counterpart when allowed equal, but limited communication resources. This provides a clearer picture of the role of quantum correlations in timelike separated scenarios, which play an important role in foundational and practical aspects of quantum information processing 2020-10-13T15:08:13Z 2020-10-13T15:08:13Z 2017-11-25 article RINGBAUER, Martin; CHAVES, Rafael. Probing the non-classicality of temporal correlations. Quantum, [S.L.], v. 1, p. 35, 25 nov. 2017. Disponível em: https://quantum-journal.org/papers/q-2017-11-25-35/. Acesso em: 01 out. 2020. http://dx.doi.org/10.22331/q-2017-11-25-35. 1678-765X https://repositorio.ufrn.br/handle/123456789/30392 10.22331/q-2017-11-25-35 en Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ application/pdf Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
institution Repositório Institucional
collection RI - UFRN
language English
topic Quantum systems
Quantum information processing
spellingShingle Quantum systems
Quantum information processing
Ringbauer, Martin
Araújo, Rafael Chaves Souto
Probing the non-classicality of temporal correlations
description Correlations between spacelike separated measurements on entangled quantum systems are stronger than any classical correlations and are at the heart of numerous quantum technologies. In practice, however, spacelike separation is often not guaranteed and we typically face situations where measurements have an underlying time order. Here we aim to provide a fair comparison of classical and quantum models of temporal correlations on a single particle, as well as timelike-separated correlations on multiple particles. We use a causal modeling approach to show, in theory and experiment, that quantum correlations outperform their classical counterpart when allowed equal, but limited communication resources. This provides a clearer picture of the role of quantum correlations in timelike separated scenarios, which play an important role in foundational and practical aspects of quantum information processing
format article
author Ringbauer, Martin
Araújo, Rafael Chaves Souto
author_facet Ringbauer, Martin
Araújo, Rafael Chaves Souto
author_sort Ringbauer, Martin
title Probing the non-classicality of temporal correlations
title_short Probing the non-classicality of temporal correlations
title_full Probing the non-classicality of temporal correlations
title_fullStr Probing the non-classicality of temporal correlations
title_full_unstemmed Probing the non-classicality of temporal correlations
title_sort probing the non-classicality of temporal correlations
publisher Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
publishDate 2020
url https://repositorio.ufrn.br/handle/123456789/30392
work_keys_str_mv AT ringbauermartin probingthenonclassicalityoftemporalcorrelations
AT araujorafaelchavessouto probingthenonclassicalityoftemporalcorrelations
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