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This research aims to simplify the detection of full quantum network nonlocality (FQNN) in various network topologies.

Witnessing Full Quantum Network Nonlocality by Employing Fewer Bell‐Like Inequalities

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This research aims to simplify the detection of full quantum network nonlocality (FQNN) in various network topologies.
Developed a new class of Bell-like inequalities for general networks.
Decomposed general networks into star subnetworks for analysis.
Evaluated the approach on forked tree-shaped and Bethe lattice networks.
Achieved significant reduction in the number of required Bell-like inequalities.
Successfully detected FQNN using fewer tests compared to previous methods.
Demonstrated applicability in two distinct network structures.

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The paper demonstrates detecting quantum network nonlocality in general networks, implying significant efficiency gains.

Yang et al. (2026) studied this question.

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