Light-matter coupling is a rapidly growing field encompassing all coupling between photonic modes and excitation modes of matter. In solid-state cavities, the light-matter interaction can be used to modify the nature of elementary excitations of matter via the formation of hybrid excitations of light and matter generically called polaritons . Such an interaction is actively investigated in many areas such as in surface-plasmon resonators , excitonic transitions in semiconductors , metamaterials  and superconducting layers .
In our group we are looking at strong and ultrastrong light-matter coupling effects in solids both from a theoretical and an experimental perspective. In particular we are studying these effects in complex oxide cavities where there may be the possibility to induce changes in some macroscopic properties.
Lukas Korosec, Giacomo Mazza