Welcome
The research in our group at the TUM School of Natural sciences, Department of Physics, of the Technical University of Munich (TUM) focuses on condensed matter theory. Our research is driven by the quest for unconventional quantum phases of matter in strongly correlated many-body systems, both in and out of thermal equilibrium. Interactions and correlations in condensed matter systems often manifest in striking and novel properties. These properties emerge from collective behavior of the quantum particles. To understand the role of interactions between such quantum particles, our group develops both analytical techniques and novel numerical approaches based on quantum information theory, utilizes artificial intelligence and machine learning, and develops algorithms for quantum computers. An important factor of our research is also its immediate relevance for experiments, which leads to a close collaboration with various experimental groups.
Exotic quantum phases
Recent experimental progress in realizing and controlling two-dimensional quantum materials of bilayer graphene or transition metal dichacogenides has enabled the investigation of a vast class of strongly correlated states of matter, including correlated insulators, strongly interacting mixtures of bosons and fermions, and fractional quantum anomalous Hall states. We develop theoretical descriptions for novel probes to detect unconventional quantum phases in these systems. Furthermore, we investigate how phases with topological order, such as fractional quantum Hall states and quantum spin liquids can be realized and tested in these systems. On the conceptual level, we also study how unconventional symmetries can be used to characterize states with topological order and predict their entanglement structure using two-dimensional Tensor Network States.

[1] | Tuning transport in solid-state Bose-Fermi mixtures by Feshbach resonances. C. Zerba, C. Kuhlenkamp, L. Mangeolle, M. Knap, Phys. Rev. Lett. 134, 126502 (2025) |
[2] | Single-particle spectral function of fractional quantum anomalous Hall states. F. Pichler, W. Kadow, C. Kuhlenkamp, M. Knap, Phys. Rev. B 111, 075108 (2025) |
[3] | Chiral Pseudospin Liquids in Moire Heterostructures. C. Kuhlenkamp, W. Kadow, A. Imamoglu, M. Knap, Phys. Rev. X 14, 021013 (2024). |
[4] | Optical Signatures of Periodic Charge Distribution in a Mott-like Correlated Insulator State. Y. Shimazaki, C. Kuhlenkamp, I. Schwartz, T. Smolenski, K. Watanabe, T. Taniguchi, M. Kroner, R. Schmidt, M. Knap, A. Imamoglu, Phys. Rev. X 11, 021027 (2021) |
Correlated quantum systems out of equilibrium
Recent conceptional and technical progress makes it possible to prepare and explore strongly-correlated non-equilibrium quantum states of matter. The tremendous level of control and favorable time scales achieved in experiments with synthetic quantum matter, such as ultracold atoms, trapped ions, or superconducting qubits renders these systems as ideal candidates to explore non-equilibrium quantum dynamics. Furthermore, very powerful experimental techniques have also been developed to study dynamic processes in condensed matter systems. We develop both analytical and numerical techniques to explore the far-from-equilibrium quantum dynamics of these systems and study fundamental questions including thermalization in closed quantum systems, emergent phenomena in periodically driven Floquet systems, dynamic phase transitions, intertwined order far from equilibrium, and the competition between coherence and dissipation.

[1] | Observing emergent hydrodynamics in a long-range quantum magnet. M. K. Joshi, F. Kranzl, A. Schuckert, I. Lovas, C. Maier, R. Blatt, M. Knap, C. F. Roos, Science 376, 720 (2022) |
[2] | Anomalous Diffusion in Dipole- and Higher-Moment Conserving Systems. J. Feldmeier, P. Sala, G. de Tomasi, F. Pollmann, M. Knap, Phys. Rev. Lett. 125, 245303 (2020) |
[3] | Ergodicity-breaking arising from Hilbert space fragmentation in dipole-conserving Hamiltonians. P. Sala, T. Rakovszky, R. Verresen, M. Knap, F. Pollmann, Phys. Rev. X 10, 011047 (2020) |
[4] | Floquet prethermalization and regimes of heating in a periodically driven, interacting quantum system. S. A. Weidinger, M. Knap, Sci. Rep. 7, 45382 (2017). |
[5] | Anomalous diffusion and Griffiths effects near the many-body localization transition. K. Agarwal, S. Gopalakrishnan, M. Knap, M. Mueller, E. Demler, Phys. Rev. Lett. 114, 160401 (2015). |
Funding




