Experimental demonstration of the connection between quantum contextuality and graph theory

Gustavo Cañas, Evelyn Acuña, Jaime Cariñe, Johanna F. Barra, Esteban S. Gómez, Guilherme B. Xavier, Gustavo Lima, and Adán Cabello
Phys. Rev. A 94, 012337 – Published 20 July 2016

Abstract

We report a method that exploits a connection between quantum contextuality and graph theory to reveal any form of quantum contextuality in high-precision experiments. We use this technique to identify a graph which corresponds to an extreme form of quantum contextuality unnoticed before and test it using high-dimensional quantum states encoded in the linear transverse momentum of single photons. Our results open the door to the experimental exploration of quantum contextuality in all its forms, including those needed for quantum computation.

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  • Received 31 March 2016

DOI:https://doi.org/10.1103/PhysRevA.94.012337

©2016 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & TechnologyAtomic, Molecular & OpticalGeneral Physics

Authors & Affiliations

Gustavo Cañas1,2,3,*, Evelyn Acuña1,2,3, Jaime Cariñe2,3,4, Johanna F. Barra1,2,3, Esteban S. Gómez1,2,3, Guilherme B. Xavier2,3,4, Gustavo Lima1,2,3, and Adán Cabello5

  • 1Departamento de Física, Universidad de Concepción, 160-C Concepción, Chile
  • 2Center for Optics and Photonics, Universidad de Concepción, Concepción, Chile
  • 3MSI-Nucleus for Advanced Optics, Universidad de Concepción, Concepción, Chile
  • 4Departamento de Ingeniería Eléctrica, Universidad de Concepción, 160-C Concepción, Chile
  • 5Departamento de Física Aplicada II, Universidad de Sevilla, E-41012 Sevilla, Spain

  • *gcanasc@udec.cl

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Issue

Vol. 94, Iss. 1 — July 2016

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