Our research lies at the forefront of fundamental physics – ranging from quantum information processing, quantum optics and cold atom physics through a programme of top-rated particle physics experiments to the theoretical understanding of space, time and matter.You’ll be guided and supervised through your research project by experts in their fields. You’ll work in a department with a truly international character, with collaborations in Europe, North America, South East Asia and Australia. We provide PhD opportunities in each of our research groups and welcome applications from potential PhD students at any time. You can contact each group’s admissions coordinator, as well as prospective supervisors, if you have questions about a project or if you'd like to propose your own topic:Astronomy CentreAtomic, Molecular and Optical Physics (AMO)Experimental Particle PhysicsMaterials PhysicsMathematical PhysicsSussex Centre for Quantum TechnologiesTheoretical Particle PhysicsYou can choose to study for a PhD or an MPhil. PhD and MPhil degrees differ in duration and in the extent of your research work.For a PhD, your research work makes a substantial original contribution to knowledge or understanding in your chosen field.For an MPhil, your work is an independent piece of research but in less depth than for a PhD. You’ll graduate with the degree title Master of Philosophy. You might be able to change to a PhD while you study for an MPhil.