Stronger Tests of the Collapse Locality Loophole in Bell Experiments

TL;DR

This paper proposes advanced experimental methods to rigorously test the collapse locality loophole in Bell experiments, which is crucial for validating the non-local nature of quantum mechanics across various collapse models.

Contribution

It introduces new techniques applicable to multiple collapse theories, enabling stronger tests of the collapse locality loophole in Bell experiments.

Findings

Techniques applicable to gravitationally induced collapse

Methods for spontaneous localization models

Approaches for consciousness-induced collapse

Abstract

Several versions of quantum theory assume some form of localized collapse. If measurement outcomes are indeed defined by localized collapses, then a loophole-free demonstration of Bell non-locality needs to ensure space-like separated collapses associated with the measurements of the entangled systems. This collapse locality loophole remains largely untested, with one significant exception probing Diosi's and Penrose's gravitationally induced collapse hypotheses. I describe here techniques that allow much stronger experimental tests. These apply to all the well known types of collapse postulate, including gravitationally induced collapse, spontaneous localization models and Wigner's consciousness-induced collapse.