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Violations of local realism with quNits up to N=16

Thomas Durt·Dagomir Kaszlikowski·Marek Zukowski
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Abstract

Predictions for systems in entangled states cannot be described in local realistic terms. However, after admixing some noise such a description is possible. We show that for two quNits (quantum systems described by N dimensional Hilbert spaces) in a maximally entangled state the minimal admixture of noise increases monotonically with N. The results are a direct extension of those of Kaszlikowski et. al., Phys. Rev. Lett. {\bf 85}, 4418 (2000), where results for $N\leq 9$ were presented. The extension up to N=16 is possible when one defines for each N a specially chosen set of observables. We also present results concerning the critical detectors efficiency beyond which a valid test of local realism for entangled quNits is possible.

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Thomas Durt, Dagomir Kaszlikowski, Marek Zukowski. 2001-01-17. Violations of local realism with quNits up to N=16. https://doi.org/10.1103/physreva.64.024101

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