Critical behaviour in the optimal generation of multipartite entanglement

Abstract Two systems whose correlations cannot be classically accounted for display the simplest instance of quantum entanglement. Although this two-party association has caused a revolution in the foundations and uses of quantum mechanics, genuine entanglement among several parties unveils a whole...

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Autores principales:	M. G. M. Moreno, Fernando Parisio
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9b23baf802494618a952c9bfa3cfcfa4
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spelling	oai:doaj.org-article:9b23baf802494618a952c9bfa3cfcfa42021-12-02T15:06:05ZCritical behaviour in the optimal generation of multipartite entanglement10.1038/s41598-017-06299-52045-2322https://doaj.org/article/9b23baf802494618a952c9bfa3cfcfa42017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06299-5https://doaj.org/toc/2045-2322Abstract Two systems whose correlations cannot be classically accounted for display the simplest instance of quantum entanglement. Although this two-party association has caused a revolution in the foundations and uses of quantum mechanics, genuine entanglement among several parties unveils a whole new class of phenomena and applications. In this work we suggest a way to prepare Dicke states from a tunable source of bipartite entanglement to investigate foundational issues. The scheme has the following distinctive features: (i) it relies on controlled information loss and unentangled measurements; (ii) irrespective of the source entanglement, whenever a Dicke state is produced, it is ideal; (iii) the optimal entanglement of the bipartite source undergoes a second-order-like transition depending on the parameters of the Dicke state to be produced. These properties lead to asymptotic results on the entanglement between any qubit belonging to a Dicke state and the remaining qubits.M. G. M. MorenoFernando ParisioNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q M. G. M. Moreno Fernando Parisio Critical behaviour in the optimal generation of multipartite entanglement
description	Abstract Two systems whose correlations cannot be classically accounted for display the simplest instance of quantum entanglement. Although this two-party association has caused a revolution in the foundations and uses of quantum mechanics, genuine entanglement among several parties unveils a whole new class of phenomena and applications. In this work we suggest a way to prepare Dicke states from a tunable source of bipartite entanglement to investigate foundational issues. The scheme has the following distinctive features: (i) it relies on controlled information loss and unentangled measurements; (ii) irrespective of the source entanglement, whenever a Dicke state is produced, it is ideal; (iii) the optimal entanglement of the bipartite source undergoes a second-order-like transition depending on the parameters of the Dicke state to be produced. These properties lead to asymptotic results on the entanglement between any qubit belonging to a Dicke state and the remaining qubits.
format	article
author	M. G. M. Moreno Fernando Parisio
author_facet	M. G. M. Moreno Fernando Parisio
author_sort	M. G. M. Moreno
title	Critical behaviour in the optimal generation of multipartite entanglement
title_short	Critical behaviour in the optimal generation of multipartite entanglement
title_full	Critical behaviour in the optimal generation of multipartite entanglement
title_fullStr	Critical behaviour in the optimal generation of multipartite entanglement
title_full_unstemmed	Critical behaviour in the optimal generation of multipartite entanglement
title_sort	critical behaviour in the optimal generation of multipartite entanglement
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/9b23baf802494618a952c9bfa3cfcfa4
work_keys_str_mv	AT mgmmoreno criticalbehaviourintheoptimalgenerationofmultipartiteentanglement AT fernandoparisio criticalbehaviourintheoptimalgenerationofmultipartiteentanglement
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Critical behaviour in the optimal generation of multipartite entanglement

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