The aim of our group is the fundamental theoretical and experimental understanding of wave-physical phenomena in periodic and functionalized media. The basis of our investigations is the evolution of classical optical wave packets and entangled single photons in three-dimensional systems of coupled waveguides, which were inscribed in optical glass chips using ultrashort laser pulses. The research directions of the group include, among others, integrated quantum optics in three-dimensional waveguide circuits, the emulation of solid-state phenomena in optical systems, the emulation of relativistic physics, and topological photonics.