We present a theoretical framework to investigate spin chirality in molecular quantum systems. Focusing on a minimal three-spin-center model with antiferromagnetic exchange and symmetry breaking driven by an electric-field-induced Dzyaloshinskii-Moriya interaction and applied magnetic fields-give rise to chiral ground states characterized by nonzero scalar spin chirality, χ=S1⋅(Sr×S2). The emergent chiral qubits naturally suppress always-on interactions that can not be switched off in weakly coupled qubits, as demonstrated through Liouville-von Neumann dynamics, which reveal phase difference in superposition states that form chiral qubits. To validate this framework, we examine realistic lanthanide complexes with radical-bridged magnetic centers, where spin-orbit coupling and asymmetric exchange facilitate chirality. Our findings establish spin chirality engineering as a promising strategy for mitigating always-on interaction in entangling two chiral qubits in molecular quantum technologies.
@article{arxiv.2501.11964,
title = {Harnessing Chiral Spin States in Molecular Nanomagnets for Quantum Technologies},
author = {Aman Ullah and Ziqi Hu and Juan Aragó and Alejandro Gaita-Ariño},
journal= {arXiv preprint arXiv:2501.11964},
year = {2025}
}