Symmetrized persistency of Bell correlations for Dicke states and GHZ-based mixtures

Quantum correlations, in particular those, which enable to violate a Bell inequality, open a way to advantage in certain communication tasks. However, the main difficulty in harnessing quantumness is its fragility to, e.g, noise or loss of particles. We study the persistency of Bell correlations of...

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Autor principal: Wieśniak, Marcin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8275800/
https://www.ncbi.nlm.nih.gov/pubmed/34253814
http://dx.doi.org/10.1038/s41598-021-93786-5
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author Wieśniak, Marcin
author_facet Wieśniak, Marcin
author_sort Wieśniak, Marcin
collection PubMed
description Quantum correlations, in particular those, which enable to violate a Bell inequality, open a way to advantage in certain communication tasks. However, the main difficulty in harnessing quantumness is its fragility to, e.g, noise or loss of particles. We study the persistency of Bell correlations of GHZ based mixtures and Dicke states. For the former, we consider quantum communication complexity reduction (QCCR) scheme, and propose new Bell inequalities (BIs), which can be used in that scheme for higher persistency in the limit of large number of particles N. In case of Dicke states, we show that persistency can reach 0.482N, significantly more than reported in previous studies.
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spelling pubmed-82758002021-07-13 Symmetrized persistency of Bell correlations for Dicke states and GHZ-based mixtures Wieśniak, Marcin Sci Rep Article Quantum correlations, in particular those, which enable to violate a Bell inequality, open a way to advantage in certain communication tasks. However, the main difficulty in harnessing quantumness is its fragility to, e.g, noise or loss of particles. We study the persistency of Bell correlations of GHZ based mixtures and Dicke states. For the former, we consider quantum communication complexity reduction (QCCR) scheme, and propose new Bell inequalities (BIs), which can be used in that scheme for higher persistency in the limit of large number of particles N. In case of Dicke states, we show that persistency can reach 0.482N, significantly more than reported in previous studies. Nature Publishing Group UK 2021-07-12 /pmc/articles/PMC8275800/ /pubmed/34253814 http://dx.doi.org/10.1038/s41598-021-93786-5 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Wieśniak, Marcin
Symmetrized persistency of Bell correlations for Dicke states and GHZ-based mixtures
title Symmetrized persistency of Bell correlations for Dicke states and GHZ-based mixtures
title_full Symmetrized persistency of Bell correlations for Dicke states and GHZ-based mixtures
title_fullStr Symmetrized persistency of Bell correlations for Dicke states and GHZ-based mixtures
title_full_unstemmed Symmetrized persistency of Bell correlations for Dicke states and GHZ-based mixtures
title_short Symmetrized persistency of Bell correlations for Dicke states and GHZ-based mixtures
title_sort symmetrized persistency of bell correlations for dicke states and ghz-based mixtures
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8275800/
https://www.ncbi.nlm.nih.gov/pubmed/34253814
http://dx.doi.org/10.1038/s41598-021-93786-5
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