A quantum bit (qubit) is a two-state quantum system. It is the fundamental unit of information in quantum computing. To perform computations with qubits you must be able to set up a coherent superposition of the two states and be able to control the wavefunction. Molecular qubits utilise spin states for this purpose (ie. S = 1/2, S = –1/2).  

Currently, most molecular qubits are lanthanide compounds, where clock transitions arise from strong spin-orbit coupling and crystal field interactions. Current state-of-the-art qubits operate at a ~ 9 GHz transition frequency. If the operating frequency can be increased, enhanced decoupling will lead to greater sensitivity, sharper transitions, and better protection against magnetic noise.

This project will aim to synthesise a series of molecular qubits based on heavy p-block radicals that operate at high-frequency clock transitions and characterise them by EPR spectroscopy and computational methods. A/Prof. Jamie Hicks will oversee the synthetic aspect of the project, whereas Prof. Nick Chilton will be responsible for the characterisation of the radical species via EPR spectroscopy and computational chemistry. The project will involve training in the use of highly reactive, air-sensitive reagents, which require handling under strict anaerobic conditions. Furthermore, training in X-ray crystallography, multinuclear NMR spectroscopy and EPR spectroscopy will be given.