Can We Build a Quantum Computer from a Single Molecule?

Conventional quantum computers require large numbers of coupled qubits. Molecular qudits offer an alternative approach by encoding information within the many quantum states of a single molecule. Using advanced Electron Paramagnetic Resonance (EPR) spectroscopy, we recently demonstrated quantum logic operations and information transfer within the electron–nuclear spin manifold of a Mn(II) molecular qudit, where forbidden spin transitions act as hardware-native quantum gates.

Current projects focus on developing the next generation of molecular quantum devices. Opportunities include designing new pulse sequences and quantum algorithms, modelling multilevel spin systems, developing high-bandwidth EPR resonators, and identifying new molecular qudits with longer coherence times and improved gate performance. The ultimate goal is to realise scalable quantum logic and coherent information transport within individual molecules.