We are seeking PhD candidates in the research and development of the theory of hybrid quantum systems and critical elements for quantum networks e. g. memories, switches and interfaces. Hybrid Quantum Systems utilise the connecting of disparate quantum subsystems to achieve functionality not possible within the isolated subsystems alone. Examples include high precision measurement of forces, electric fields, magnetic fields, microwave-optical single photon interfaces etc. Examples of potential subsystems include superconducting systems, NV spins in diamond, feriimagnetic systems, electro and magneto mechanical systems, optical and atomic systems.