Carboxylate based molecular magnet: one path toward achieving stable quantum correlations at room temperature

TL;DR

This paper demonstrates that carboxylate-based molecular magnets can sustain significant quantum correlations at high temperatures, advancing the development of stable quantum materials for technological applications.

Contribution

It introduces a novel molecular magnet design that maintains quantum correlations up to 9540 K, highlighting the role of carboxylate groups in enhancing magnetic interactions.

Findings

Quantum correlations persist up to 9540 K without entanglement.

Pure singlet states are stable up to around 80 K.

Carboxylate groups promote strong magnetic interactions.

Abstract

The control of quantum correlations in solid state systems by means of material engineering is a broad avenue to be explored, since it makes possible steps toward the limits of quantum mechanics and the design of novel materials with applications on emerging quantum technologies. In this context, this Letter explores the potential of molecular magnets to be prototypes of materials for quantum information technology. More precisely, we engineered a material and from its geometric quantum discord we found significant quantum correlations up to 9540 K (even without entanglement); and, in addition, a pure singlet state occupied up to around 80 K (above liquid nitrogen temperature). These results could only be achieved due to the carboxylate group promoting a metal-to-metal huge magnetic interaction.