PhD Studentship: Quantum computing with new error correcting codes

Quantum systems can store and process quantum information, opening up the prospect of new technologies that outperform conventional supercomputers in many areas. However, quantum information is more fragile than classical binary information, being more susceptible to noise and rapid degradation. To build a reliable device, quantum information must be stored within an abstract quantum codespace that protects it against noise. Quantum computers must also tolerate faults occurring while processing information. In this project, you will develop new techniques for fault-tolerantly storing and processing quantum information, using both analytic and numerical methods to assess their performance. Quantum codes investigated in this PhD will include so-called topological codes (using notions of topology and homology) and more general low-density parity check codes (using graph theory tools such as expander graphs). I am looking for an enthusiastic student with a physics, mathematics or computer science degree. Additional skills that are desirable, but not essential, include: a good undergraduate-level understanding of quantum mechanics, a strong mathematical background and/or experience programming and running numerical simulations (e.g. in C or python). If you're thinking of applying and want to know more about the project, then please email me at e.campbell@sheffield.ac.uk. You can also visit my website http://earltcampbell.com/

Science Graduate School:

As a PhD student in one of the science departments at the University of Sheffield, you’ll be part of the Science Graduate School – a community of postgraduate researchers working across biology, chemistry, physics, mathematics and psychology. You’ll get access to training opportunities designed to support your career development by helping you gain professional skills that are essential in all areas of science. You’ll be able to learn how to recognise good research and research behaviour, improve your communication abilities and experience technologies that are used in academia, industry and many related careers. Visit http://www.sheffield.ac.uk/sgs to learn more.