Extreme Violation of Local Realism in Quantum Hypergraph States

Mariami Gachechiladze, Costantino Budroni, and Otfried Gühne
Phys. Rev. Lett. 116, 070401 – Published 17 February 2016
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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.

  • Figure
  • Received 6 August 2015

DOI:https://doi.org/10.1103/PhysRevLett.116.070401

© 2016 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & TechnologyGeneral Physics

Authors & Affiliations

Mariami Gachechiladze, Costantino Budroni, and Otfried Gühne

  • Naturwissenschaftlich-Technische Fakultät, Universität Siegen, Walter-Flex-Straße 3, 57068 Siegen, Germany

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Issue

Vol. 116, Iss. 7 — 19 February 2016

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