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Eltschka, Christopher ; Siewert, Jens

Maximum N-body correlations do not in general imply genuine multipartite entanglement

Article

Eltschka, Christopher and Siewert, Jens (2020) Maximum N-body correlations do not in general imply genuine multipartite entanglement. Quantum 4 (229), pp. 1-11.

DOI to cite this document: 10.5283/epub.41653


Abstract

The existence of correlations between the parts of a quantum system on the one hand, and entanglement between them on the other, are different properties. Yet, one intuitively would identify strong N-party correlations with N-party entanglement in an N-partite quantum state. If the local systems are qubits, this intuition is confirmed: The state with the strongest N-party correlations is the ...

The existence of correlations between the parts of a quantum system on the one hand, and entanglement between them on the other, are different properties. Yet, one intuitively would identify strong N-party correlations with N-party entanglement in an N-partite quantum state. If the local systems are qubits, this intuition is confirmed: The state with the strongest N-party correlations is the Greenberger-Horne-Zeilinger (GHZ) state, which does have genuine multipartite entanglement. However, for high-dimensional local systems the state with strongest N-party correlations may be a tensor product of Bell states, that is, partially separable. We show this by introducing several novel tools for handling the Bloch representation.



Involved Institutions


Details

Item typeArticle
Journal or Publication TitleQuantum
PublisherVEREIN FORDERUNG OPEN ACCESS PUBLIZIERENS QUANTENWISSENSCHAF
Open Access TypeGold (with APC)
Place of PublicationWIEN
Volume4
Number of Issue or Book Chapter229
Page Rangepp. 1-11
Date10 February 2020
Date of publication19 Feb 2020 11:31
InstitutionsPhysics > Institute of Theroretical Physics
Identification Number
ValueType
10.22331/q-2020-02-10-229DOI
KeywordsSTATES;
Dewey Decimal Classification500 Science > 530 Physics
StatusPublished
RefereedYes, this version has been refereed
Created at the University of RegensburgYes
URN of the UB Regensburgurn:nbn:de:bvb:355-epub-416539
Item ID41653

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