Christoph Marquardt is the head of the quantum information processing group at the Max Planck Institute for the Science of Light in Erlangen. In 2008 he worked as metrology scientist at Carl Zeiss Laser Optics and then returned to academia. In 2012-2014 he was Alcatel Lucent Bell Labs guest professor at the University of Erlangen-Nuremberg and in 2013-2014 he was visiting researcher at the Technical University of Denmark. The topics of his quantum information processing group cover a broad range of quantum optics and quantum information experiments, from nonlinear photonics to satellite-based quantum key distribution and quantum limited receivers in optical fibre networks. Christoph Marquardt serves in several advisory committees of the European Union and German government and acts as a scientific advisor for the spin-off project “Infiniquant”. He is active in several EU and national quantum communication research projects and is taking care of the holistic system design of the German BMBF QuNET initiative.