Multipartite Entanglement Detection via Correlation Minor Norm

Entanglement is a uniquely quantum resource giving rise to many quantum technologies. It is therefore important to detect and characterize entangled states, but this is known to be a challenging task, especially for multipartite mixed states. The correlation minor norm (CMN) was recently suggested a...

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Bibliographic Details
Published in:arXiv.org 2023-02
Main Authors: Rain Lenny, Te'eni, Amit, Peled, Bar Y, Carmi, Avishy, Cohen, Eliahu
Format: Article
Language:English
Subjects:
Correlation analysis
Entangled states
Mathematical analysis
Tensors
Online Access:Get full text
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Summary:Entanglement is a uniquely quantum resource giving rise to many quantum technologies. It is therefore important to detect and characterize entangled states, but this is known to be a challenging task, especially for multipartite mixed states. The correlation minor norm (CMN) was recently suggested as a bipartite entanglement detector employing bounds on the quantum correlation matrix. In this paper we explore generalizations of the CMN to multipartite systems based on matricizations of the correlation tensor. It is shown that the CMN is able to detect and differentiate classes of multipartite entangled states. We further analyze the correlations within the reduced density matrices and show their significance for entanglement detection. Finally, we employ matricizations of the correlation tensor for introducing a measure of global quantum discord.
ISSN:2331-8422