Demonstration of Quantum Nonlocality in the Presence of Measurement Dependence

Djeylan Aktas, Sébastien Tanzilli, Anthony Martin, Gilles Pütz, Rob Thew, and Nicolas Gisin
Phys. Rev. Lett. 114, 220404 – Published 4 June 2015

Abstract

Quantum nonlocality stands as a resource for device independent quantum information processing (DIQIP), such as, for instance, device independent quantum key distribution. We investigate, experimentally, the assumption of limited measurement dependence, i.e., that the measurement settings used in Bell inequality tests or DIQIP are partially influenced by the source of entangled particle and/or by an adversary. Using a recently derived Bell-like inequality [G. Pütz, Phys. Rev. Lett. 113, 190402 (2014)] and a 99% fidelity source of partially entangled polarization photonic qubits, we obtain a clear violation of the inequality, excluding a much larger range of measurement dependent local models than would be possible with an adapted Clauser-Horne-Shimony-Holt (CHSH) inequality. It is therefore shown that the measurement independence assumption can be widely relaxed while still demonstrating quantum nonlocality.

  • Figure
  • Figure
  • Figure
  • Received 23 March 2015

DOI:https://doi.org/10.1103/PhysRevLett.114.220404

© 2015 American Physical Society

Authors & Affiliations

Djeylan Aktas and Sébastien Tanzilli*

  • Université Nice Sophia Antipolis, Laboratoire de Physique de la Matière Condensée, CNRS UMR 7336, Parc Valrose, 06108 Nice Cedex 2, France

Anthony Martin, Gilles Pütz, Rob Thew, and Nicolas Gisin

  • Group of Applied Physics, University of Geneva, CH-1211 Geneva 4, Switzerland

  • *sebastien.tanzilli@unice.fr
  • nicolas.gisin@unige.ch

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 114, Iss. 22 — 5 June 2015

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×