![dr stefan kaiser dr stefan kaiser](https://profile-images.xing.com/images/1dfc9a067b7c363a15093738fd3fa9f0-2/jochen-kaiser.1024x1024.jpg)
organic conductors and superconductors, as model systems to investigate the ultrafast dynamics of electronic correlations and their coupling to external excitations. The latter relates directly to another main research field of the group: Quantum many body dynamics in correlated electron materials. We investigate different scenarios like the balancing between competing phases triggered by ultrashort light pulses or explore possibilities of dynamical stabilization in periodically driven light fields.
![dr stefan kaiser dr stefan kaiser](https://profile-images.xing.com/images/7107495870c994709b8c3a54947a95e6-4/stefan-gaab.1024x1024.jpg)
One research focus is the light induced superconductivity in high temperature superconductors. Combining these methods with high-resolution optical near-field microscopy we can access such dynamics even with sub-wavelength resolution down to the nanoscale. The group applies advanced nonlinear optical methods such as ultra-broad band pump-probe spectroscopy not only to investigate ultrafast dynamics in complex solid-state materials but also to control them with light. The research interest is ultrafast spectroscopy of strongly correlated electron materials, and novel quantum materials. The Ultrafast Solid State Spectroscopy group is a joint Research Group of the Max Planck Institute for Solid State Research and the Department of Physics at the University of Stuttgart.
![dr stefan kaiser dr stefan kaiser](https://profile-images.xing.com/images/ae3968014f9de0b1194718b721ab36ff-7/stefan-kaiser.1024x1024.jpg)
We search for new ways of manipulating modern quantum materials using strong ultrashort light pulses in order to control emergent physical properties and find new functionalities of dynamically driven matter.