From EPR, Schr\"odinger paradox to nonlocality based on perfect correlation

TL;DR

This paper presents a straightforward proof of quantum nonlocality based solely on perfect correlations discussed by EPR and Schrödinger, challenging the notion of local realism in quantum mechanics.

Contribution

It offers a simple, conceptually clear proof of nonlocality using extended EPR correlations, emphasizing the foundational aspects of quantum entanglement.

Findings

Proof of nonlocality using perfect correlations

Extension of EPR by Schrödinger to demonstrate nonlocality

Clarification of the role of perfect correlations in quantum nonlocality

Abstract

We give a conceptually simple proof of nonlocality using only the perfect correlations between results of measurements on distant systems discussed by Einstein, Podolsky and Rosen---correlations that EPR thought proved the incompleteness of quantum mechanics. Our argument relies on an extension of EPR by Schr\"odinger.