Joint measurements and Svetlichny's inequality

TL;DR

This paper demonstrates that Svetlichny's inequality can be derived from joint measurements and no-signaling, and discusses the implications of its violation exceeding quantum bounds on causality.

Contribution

It establishes a link between joint measurements, no-signaling, and Svetlichny's inequality, revealing causality constraints within quantum theory.

Findings

Svetlichny's inequality can be derived from joint measurements and no-signaling.

Violating the quantum bound of Svetlichny's inequality implies causality breach.

Quantum measurement assumptions restrict the extent of Svetlichny's inequality violation.

Abstract

We prove that the Svetlichny's inequality can be derived from the existence of joint measurements and the principle of no-signaling. Then we show that, on the basis of quantum measurement assumption, it would imply the breach of causality if the magnitude of violation of Svetlichny's inequality exceeds quantum bound.