Resilience of realism-based nonlocality to local disturbance

V. S. Gomes and R. M. Angelo
Phys. Rev. A 99, 012109 – Published 9 January 2019

Abstract

Employing a procedure called monitoring—via a completely positive trace preserving map that is able to interpolate between weak and projective measurements—we investigate the resilience of the recently proposed realism-based nonlocality to local and bilocal weak measurements. This analysis indicates realism-based nonlocality as the most ubiquitous and persistent form of quantumness within a wide class of quantum-correlation quantifiers. In particular, we show that the set of states possessing this type of quantumness forms a strict superset of symmetrically discordant states and, therefore, of discordant, entangled, steerable, and Bell-nonlocal states. Moreover, we find that, under monitoring, realism-based nonlocality is not susceptible to sudden death.

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  • Received 17 September 2018

DOI:https://doi.org/10.1103/PhysRevA.99.012109

©2019 American Physical Society

Physics Subject Headings (PhySH)

General Physics

Authors & Affiliations

V. S. Gomes and R. M. Angelo

  • Department of Physics, Federal University of Paraná, P.O. Box 19044, 81531-980 Curitiba, Paraná, Brazil

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Issue

Vol. 99, Iss. 1 — January 2019

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