Bell inequalities for multipartite qubit quantum systems and their maximal violation

TL;DR

This paper introduces new Bell inequalities tailored for multiqubit systems, demonstrating improved entanglement detection and providing formulas to compute their maximal violations.

Contribution

The paper proposes novel Bell inequalities for multiqubit systems that outperform previous inequalities in detecting entanglement and offers formulas for their maximal violations.

Findings

Better detection of multiqubit entanglement than previous inequalities

Formulas for calculating maximal violations of the new Bell inequalities

Applicable to any multiqubit quantum state

Abstract

We present a set of Bell inequalities for multiqubit quantum systems. These Bell inequalities are shown to be able to detect multiqubit entanglement better than previous Bell inequalities such as Werner-Wolf-Zukowski- Brukner ones. Computable formulas are presented for calculating the maximal violations of these Bell inequalities for any multiqubit states.