Philipp Höhn is a postdoc at University College London, UK. After completing his Ph.D. at Universiteit Utrecht in the Netherlands, he has been a postdoc at the Perimeter Institute in Canada and the Institute for Quantum Optics and Quantum Information in Vienna, Austria, before moving to London. His research is motivated by general questions in and around quantum gravity and includes topics in classical gravity and quantum foundations. He has worked on better understanding observables and dynamics in a diffeomorphism invariant context, developing a notion of quantum general covariance based on quantum reference frames and reconstructing quantum theory from informational axioms. Currently, he is also interested in the interplay between quantum correlations and geometry and in the emergence of classicality from within quantum theory, specifically in the presence of chaos.