Honours Project
Dr Tom Stace

When building a quantum computer, or other quantum processing device, it is important to be able recover from errors that may arise.  This is accomplished using error correcting codes, which redundantly encode quantum information in a way that enables its recovery in the event that errors occur.  One of the problems with many error correcting schemes is that they have a very large overhead: very many physical, error-prone qubits are required to perform the task of a few logical, error-free qubits.  This project would be involved in developing a new way of thinking about error correction using ideas from topology, in an effort to dramatically reduce the overhead.