Magnetic molecules in quantum nanoscience R. Sessoli Department of Chemistry U. Schiff, University of Florence, Italy
Quantum Technologies might benefit from the remarkable quantum properties of molecular spin systems based on the coordination bond. The versatility of the molecular approach combined with rational design has recently boosted the operativity temperature of molecules acting as bits of memory, otherwise known as Single-Molecule Magnets, or the coherence time of molecular spin qubits. The latter class is currently explored because the richness and tunability of the spectrum of spin levels make them particularly suitable for quantum error correction, while spin-spin interaction can be tuned to realize quantum gates and quantum simulators. Molecules can also be processed to be deposited on surfaces, allowing the realization of hybrid nanostructures. However, the molecular approach also poses key challenges, such as the presence of low-energy vibrational modes typical of molecular lattices. This drawback can be in part overcome by chemical design. Achieving the control of a single molecule is also challenging because the spin is weakly coupled with the magnetic field and even more weakly with the electric field, which can be confined at the molecular scale, with the spin degrees of freedom of the molecule. Learning from nature, we propose exploiting chirality, particularly spin selectivity in electron transfer processes through chiral structures, as an innovative spin-to-charge mechanism for molecular spin control and readout.
PL06
© The Author(s), 2023
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