The Optoelectronics and Quantum Devices Group at the Technical University of Berlin (TUB) focusses on quantum optics, quantum light sources and optoelectronic devices based on III-V micro- and nano-structures. Of particular interest are quantum dots for efficient light sources, single-photon emitters, and low threshold microlasers. TUB participates in technical work-packages WP2 and WP3 based on its expertise in the fabrication of deterministic single-photon sources, and in the quantum optical properties of non-classical light sources and their application in quantum key distribution.