Experimentally implementable criteria revealing substructures of genuine multipartite entanglement

TL;DR

This paper introduces a practical framework using simple inequalities to identify substructures of genuine multipartite entanglement, enabling efficient experimental detection with local measurements and favorable scaling.

Contribution

It provides a new set of inequalities for detecting multipartite entanglement substructures that are experimentally accessible and scalable.

Findings

Inequalities effectively discriminate different entanglement classes.

Framework demonstrates robustness against noise.

Implementation discussions show practical feasibility.

Abstract

We present a general framework that reveals substructures of genuine multipartite entanglement. Via simple inequalities it is possible to discriminate different sets of multipartite qubit states. These inequalities are beneficial regarding experimental examinations as only local measurements are required. Furthermore, the number of observables scales favorably with system size. In exemplary cases we demonstrate the noise resistance and discuss implementations.