Detection of spin-chiral transitions in thin films of magnetoelectric spin-triangle qubits – SPINCHIRAL

Spin chirality is an emergent quantum property that has been proposed for information encoding in quantum information processing applications. "Spin-chirality qubits" promise to be immune to magnetic noise, e.g. deriving d from magnetic nuclei in their matrix. The appearance of this property is closely related to another desirable characteristic of spin qubits, that of electric control. We have recently shown that magnetoelectric couplings occur in antiferromagnetic molecular spin triangles when these exhibit Dzyaloshinskii-Moriya interactions (DMI). DMI are also responsible for the appearance of spin chirality, making such objects doubly important for this new qubit paradigm. Following up on these breakthroughs, we propose to: (1) Develop molecular a triangles as thin-film arrays. (2) Observe for the first time spin-chiral transitions and develop optical methods for qubit control and readout. (3) Develop theoretical models for the interpretation of these transitions.