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Experimental Implementation of Dimension-Dependent Contextuality Inequality

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autorschaft

  • Emil Håkansson
  • Amelie Piveteau
  • Alban Seguinard
  • Sadiq Muhammad
  • Martin Plávala

Organisationseinheiten

Externe Organisationen

  • Stockholm University
  • Hitachi Energy Sweden AB
  • Universität Siegen

Details

OriginalspracheEnglisch
Aufsatznummer200202
Seitenumfang6
FachzeitschriftPhysical review letters
Jahrgang134
Ausgabenummer20
PublikationsstatusVeröffentlicht - 22 Mai 2025

Abstract

We present a derivation and experimental implementation of a dimension-dependent contextuality inequality to certify both the quantumness and dimensionality of a given system. Existing methods for certification of the dimension of a quantum system can be cheated by using larger classical systems, creating a potential loophole in these benchmarks, or can in practice only be evaluated assuming pure quantum states. Our approach uses contextuality inequalities that cannot be violated by classical systems thus closing the previous loopholes. We validate this framework experimentally with photons, observing violations of a CHSH-based contextuality inequality and surpassing the qutrit bound of the CGLMP4-based contextuality inequality. These show that contextuality can be used for noise-robust tests of the number of qubits.

ASJC Scopus Sachgebiete

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Experimental Implementation of Dimension-Dependent Contextuality Inequality. / Håkansson, Emil; Piveteau, Amelie; Seguinard, Alban et al.
in: Physical review letters, Jahrgang 134, Nr. 20, 200202, 22.05.2025.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Håkansson, E, Piveteau, A, Seguinard, A, Muhammad, S, Bourennane, M, Gühne, O & Plávala, M 2025, 'Experimental Implementation of Dimension-Dependent Contextuality Inequality', Physical review letters, Jg. 134, Nr. 20, 200202. https://doi.org/10.1103/PhysRevLett.134.200202
Håkansson, E., Piveteau, A., Seguinard, A., Muhammad, S., Bourennane, M., Gühne, O., & Plávala, M. (2025). Experimental Implementation of Dimension-Dependent Contextuality Inequality. Physical review letters, 134(20), Artikel 200202. https://doi.org/10.1103/PhysRevLett.134.200202
Håkansson E, Piveteau A, Seguinard A, Muhammad S, Bourennane M, Gühne O et al. Experimental Implementation of Dimension-Dependent Contextuality Inequality. Physical review letters. 2025 Mai 22;134(20):200202. doi: 10.1103/PhysRevLett.134.200202
Håkansson, Emil ; Piveteau, Amelie ; Seguinard, Alban et al. / Experimental Implementation of Dimension-Dependent Contextuality Inequality. in: Physical review letters. 2025 ; Jahrgang 134, Nr. 20.
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