Locality and entanglement of indistinguishable particles

Abstract - Entanglement is one of the strongest quantum correlation, and is a key ingredient in fundamental aspects of quantum mechanics and a resource for quantum technologies. While entanglement theory is well settled for distinguishable particles, there are five inequivalent approaches to entangl...

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Hauptverfasser: Johann, Till Jonas Frederick (VerfasserIn) , Marzolino, Ugo (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 29 July 2021
In: Scientific reports
Year: 2021, Jahrgang: 11, Pages: 1-10
ISSN:2045-2322
DOI:10.1038/s41598-021-94991-y
Online-Zugang:Verlag, kostenfrei, Volltext: https://doi.org/10.1038/s41598-021-94991-y
Verlag, kostenfrei, Volltext: http://www.nature.com/articles/s41598-021-94991-y
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Verfasserangaben:Till Jonas Frederick Johann & Ugo Marzolino

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520 |a Abstract - Entanglement is one of the strongest quantum correlation, and is a key ingredient in fundamental aspects of quantum mechanics and a resource for quantum technologies. While entanglement theory is well settled for distinguishable particles, there are five inequivalent approaches to entanglement of indistinguishable particles. We analyse the different definitions of indistinguishable particle entanglement in the light of the locality notion. This notion is specified by two steps: (i) the identification of subsystems by means of their local operators; (ii) the requirement that entanglement represent correlations between the above subsets of operators. We prove that three of the aforementioned five entanglement definitions are incompatible with any locality notion defined as above. 
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