Extreme violation of local realism in quantum hypergraph states

Abstract

Hypergraph states form a family of multiparticle quantum states that generalizes the well-known concept of Greenberger-Horne-Zeilinger states, cluster states, and more broadly graph states. We study the nonlocal properties of quantum hypergraph states. We demonstrate that the correlations in hypergraph states can be used to derive various types of nonlocality proofs, including Hardy-type arguments and Bell inequalities for genuine multiparticle nonlocality. Moreover, we show that hypergraph states allow for an exponentially increasing violation of local realism which is robust against loss of particles. Our results suggest that certain classes of hypergraph states are novel resources for quantum metrology and measurement-based quantum computation.

arXiv comment31 pages, 1 figure, v3: final version

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• Increased success probability in Hardy's nonlocality: Theory and demonstration
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• Qudit Hypergraph States
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• The Evolution of Hyperedge Cardinalities and Bose-Einstein Condensation in Hypernetworks
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• Sheaf-Theoretic Methods in Quantum Mechanics and Quantum Information Theory
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• Multipartite entanglement in qudit hypergraph states
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