The hybrid quantum photonic devices (hqpd) laboratory at the University of Paderborn focuses its research on the realization of building blocks for photonic quantum technologies. The use of state-of-the-art nanotechnologies enables the fabrication of devices down to the nanoscale. Our hybrid and heterogeneous integration approach allows us to harvest the best properties of different material platforms. For example, by carefully designing the structures on our photonic integrated circuits, we strive to realize ideal quantum light sources, active circuit elements, and quantum memories for applications in quantum communication and photonic quantum computing. Our research activities can be categorized in 3 main pillars: quantum optics experiments, quantum photonic integrated circuit fabrication, and ultra-fast cryogenic electronics.