From exotic superconductors to topological polarization vortices, quantum materials exhibit stunning and extremely useful physical properties.  Understanding the physics of quantum materials is a frontier research challenge of modern science.  The control of many-body states in engineered devices could ultimately revolutionise modern technologies.  Our group combines molecular-scale materials fabrication, single-crystal synthesis and device engineering with state-of-the-art transport, thermodynamic and spectroscopic measurements.   We understand and predict the properties of materials using quantum-field models and first-principles calculations.  We explore forms of ‘ultra-quantum-matter’ in which the fascinating principles of superposition, entanglement and measurement-induced collapse, extend beyond the atom scale to macroscopic scales.