Our research focuses on the theoretical description of non-equilibrium phenomena in many-body quantum systems using numerical methods as well as novel quantum simulation methods executed on modern quantum computers. We collaborate intensively with the theoretical and experimental solid state physicists of the department as well as with other departments and institutes in the area of quantum computer applications. We work together with the German Aerospace Center (DLR) to evaluate the performance of near term quantum computers for quantum simulations, as well as with the Forschungszentrum Jülich and the Los Alamos National Laboratory in the United States.
Research on quantum materials and quantum computing brings together the frontiers of solid-state physics, material science and quantum information science in order to discover new materials with desirable, non-generic, quantum mechanical effects with potential use in next-generation quantum devices. The realization of quantum advantage in digital quantum simulations is a cornerstone of our research, with profound implications for various scientific domains, especially condensed matter physics.
To reach this aim we develop novel quantum algorithms as well as error mitigation schemes and employ advanced classical simulation methods, such as time-dependent variational Monte Carlo and matrix product density operators. We also test our approach on real quantum computers, such as the IBM quantum computers.