His research interests cover a wide area of topics related to mesoscopic quantum systems. He strives to answer fundamental questions but also to develop ideas for applications in the field of quantum technologies. Notable research activities of the past years include (i) topological quantum systems, e.g., hybrid systems consisting of superconductors and quantum Hall systems, (ii) nonequilibrium quantum systems, in particular the role of topology in transport phenomena, and (iii) quantum spin systems, in particular, quantum skyrmions and their application for quantum computing.