Nonlocal correlations in quantum networks distributed with different entangled states

We initiate the study of the nonlocal correlations in generic asymmetric quantum networks in a star configuration. Therein, the diverse unrelated sources can emit either partially or maximally entangled states, while the observers employ varying numbers of measurement settings. We propose nonlinear...

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Veröffentlicht in:New journal of physics 2024-03, Vol.26 (3), p.33026
1. Verfasser: Hsu, Li-Yi
Format: Artikel
Sprache:eng
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Zusammenfassung:We initiate the study of the nonlocal correlations in generic asymmetric quantum networks in a star configuration. Therein, the diverse unrelated sources can emit either partially or maximally entangled states, while the observers employ varying numbers of measurement settings. We propose nonlinear Bell inequalities tailored to the distributed entangled states. Specifically, we demonstrate that the algebraic maximal violations of the proposed nonlinear Bell inequalities are physically achievable within the quantum region. To achieve this, we construct the segmented Bell operators through the cut-graft-mix method applied to the Bell operators in the standard Bell tests. Furthermore, we devise the fitting Bell operators using the sum-of-square approach.
ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/ad313c