Dr Frederik Ravn Klausen

Frederik Ravn Klausen is a mathematical physicist specialising in the rigorous study of quantum systems, probability theory, and statistical mechanics. His research focuses in particular on the mathematical structure of quantum noise, decoherence, and entanglement, as well as the interface between quantum information theory and classical models of random geometry.

He completed his PhD at QMATH at University of Copenhagen, where his dissertation developed probabilistic and graphical methods for analysing lattice spin systems, with applications to both classical models—such as the Ising and Potts models—and open quantum systems governed by Lindblad dynamics. His work sheds light on how disorder and environmental coupling affect quantum coherence and localisation, with implications for quantum computing.

After a postdoc Princeton University, where he studied interface phenomena and phase transitions in statistical mechanics, particularly the roughening transition and the geometry of domain walls he continues his research at the University of Cambridge, focusing on stochastic geometry and quantum many-body systems.

In addition to his core work in quantum and mathematical physics, Frederik has published research in political science on the mathematics of electoral systems and institutional design. He takes an interdisciplinary approach to research and has contributed to public debate on education, research policy, and democracy in Denmark.