Revealing the non-classicality of a molecular nanomagnet

TL;DR

This paper demonstrates that molecular nanomagnets inherently exhibit quantum behavior by generating quantum correlations, supporting their potential use in quantum information processing.

Contribution

It applies a recent quantum non-classicality criterion to molecular nanomagnets, showing their intrinsic quantum nature across various dynamical regimes.

Findings

Molecular nanomagnets can generate and enhance quantum correlations.

The analysis confirms their intrinsic quantum nature.

Results support their potential as quantum information resources.

Abstract

Molecular nanomagnets are compounds characterized by a high-spin magnetic core that is protected by organic ligands. They have recently gained attention as potential quantum information carriers in solid-state quantum computing platforms, simultaneously exhibiting classical macroscopic properties and quantum features in light of their complex nature and configuration. Addressing the condition when they manifest unquestionable quantum behavior is key to guarantee their effectiveness as resources for quantum information processing. We address the quantumness of molecular nanomagnets using a recently formulated criterion [cf. Krisnanda et al., Phys. Rev. Lett. 119, 120402 (2017)] demonstrating that these systems exhibit an intrinsic quantum nature, as evidenced by their ability to generate and enhance quantum correlations between two non-interacting probes. Our analysis, which is performed addressing various dynamical regimes, paves the way to the design of experimentally viable tests of non-classicality in multipartite registers consisting of ensembles of molecular nanomagnets.