Local basis-dependent noise-induced Bell-nonlocality sudden death in tripartite systems

TL;DR

This paper shows that in three-qubit systems, local dephasing noise can completely eliminate Bell-nonlocal correlations in finite time, extending the understanding of noise-induced sudden death from bipartite to multipartite systems.

Contribution

It introduces the phenomenon of Bell-nonlocality sudden death in tripartite systems caused solely by local dephasing noise, expanding prior bipartite-focused research.

Findings

Bell-nonlocality can be fully destroyed in finite time by local noise

Tripartite systems exhibit sudden death of nonlocality under dephasing

The study extends noise-induced nonlocality decay to multipartite systems

Abstract

We demonstrate that multipartite Bell-inequality violations can be fully destroyed in finite time in three-qubit systems subject only to the mechanism of local external asymptotic dephasing noise. This broadens the study of local-noise-induced sudden death of nonlocal behavior, extending it beyond the realm of bipartite systems, to which it had previously been restricted.