Quantum correlations and Bell's inequality violation in a Heisenberg spin dimer via neutron scattering

TL;DR

This paper theoretically investigates quantum correlations and Bell's inequality violation in a Heisenberg spin-1/2 dimer using neutron scattering data, providing a method to detect quantum nonlocality in molecular magnets.

Contribution

It introduces a theoretical framework linking neutron scattering properties to quantum correlations and nonlocality in a spin dimer system.

Findings

Quantum correlations can be identified through neutron scattering data.

Bell's inequality violation is theoretically demonstrated in the system.

Quantum nonlocality is linked to diffractive properties in neutron experiments.

Abstract

The characterization of quantum information quantifiers has attracted a considerable attention of the scientific community, since they are a useful tool to verify the presence of quantum correlations in a quantum system. In this context, in the present work we show a theoretical study of some quantifiers, such as entanglement witness, entanglement of formation, Bell's inequality violation and geometric quantum discord as a function of the diffractive properties of neutron scattering. We provide one path toward identifying the presence of quantum correlations and quantum nonlocality in a molecular magnet as a Heisenberg spin-$1/2$ dimer, by diffractive properties typically obtained via neutron scattering experiments.