Welcome to the website of the Professorship for Quantum Electronics and Computer Engineering (QEC) led by Prof. Dr. Kai Müller. Our research focusses on the quantum engineering of building blocks and devices which are essential for all areas of photonic quantum technologies. These building blocks are sources of non-classical light such as single-photons or entangled photons, spin-photon interfaces, quantum memories and single photon detectors. Overall, the group’s research spans the entire range from engineering light-matter interactions to demonstrator experiments.