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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.
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| Item type | Article | ||||
| Journal or Publication Title | Quantum | ||||
| Publisher | VEREIN FORDERUNG OPEN ACCESS PUBLIZIERENS QUANTENWISSENSCHAF | ||||
| Open Access Type | Gold (with APC) | ||||
| Place of Publication | WIEN | ||||
| Volume | 4 | ||||
| Number of Issue or Book Chapter | 229 | ||||
| Page Range | pp. 1-11 | ||||
| Date | 10 February 2020 | ||||
| Date of publication | 19 Feb 2020 11:31 | ||||
| Institutions | Physics > Institute of Theroretical Physics | ||||
| Identification Number |
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| Keywords | STATES; | ||||
| Dewey Decimal Classification | 500 Science > 530 Physics | ||||
| Status | Published | ||||
| Refereed | Yes, this version has been refereed | ||||
| Created at the University of Regensburg | Yes | ||||
| URN of the UB Regensburg | urn:nbn:de:bvb:355-epub-416539 | ||||
| Item ID | 41653 |
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