Dahlsten is also at the Clarendon Laboratory in Oxford. Previously he worked at the Institute for Theoretical Physics at ETH Zurich. He was trained at Imperial College. He is a Research Fellow of Wolfson College and a Lecturer of St Catherine’s College, both of Oxford University. He is one of the founders of a new approach to non-equilibrium statistical mechanics which is inspired by single shot information theory. He has also contributed several results on the foundations of quantum theory.