Violation of Bell inequalities through the coincidence-time loophole

TL;DR

This paper discusses the violation of Bell inequalities via the coincidence-time loophole, highlighting a testable model that introduces contextuality through a probabilistic approach to measurement apparatus, with implications for quantum simulation.

Contribution

It presents a novel, experimentally testable model exploiting the coincidence-time loophole that introduces contextuality via a probabilistic measurement apparatus model.

Findings

De Raedt et al.'s model is experimentally testable.

The model introduces contextuality through a probabilistic approach.

It offers a potential simulation method for quantum computer elements.

Abstract

The coincidence-time loophole was identified by Larsson & Gill (Europhys. Lett. 67, 707 (2004)); a concrete model that exploits this loophole has recently been described by De Raedt et al. (Found. Phys., to appear). It is emphasized here that De Raedt et al.'s model is experimentally testable. De Raedt et al.'s model also introduces contextuality in a novel and classically more natural way than the use of contextual particle properties, by introducing a probabilistic model of a limited set of degrees of freedom of the measurement apparatus, so that it can also be seen as a random field model. Even though De Raedt et al.'s model may well contradict detailed Physics, it nonetheless provides a way to simulate the logical operation of elements of a quantum computer, and may provide a way forward for more detailed random field models.