Dr. Ralf-Peter Braun received his MS and PhD in Electrical Engineering from the Technical University Berlin, Germany, in 1985 and 1995, respectively. He has more than 40 years of research and industry experience in optical transmission systems and network architectures. After 14 years of research work at the Heinrich-Hertz-Institute, Berlin, Germany, he joined Deutsche Telekom in 1997. He setup the Deutsche Telekom SASER R&D TestNet in Germany and supported the setup of the i14y-lab and the T-Labs quantum laboratory at Deutsche Telekom in Berlin. In September 2022 he retired and joined in October 2022 the ORBIT Gesellschaft for Application- and Information Systems as a senior consultant. Furthermore, he works for the Humboldt University zu Berlin in the field of quantum networks. He is engaged in R&D projects comprising network architecture, technology, service, control, Terahertz communications, visible light communications, test networks, and standardization. He was a member of VDE, ITG, MEF, and IEEE802.3 working group. Currently he is involved in quantum technologies, including network security, QKD and PQC systems, entanglement swapping, quantum teleportation, and quantum repeaters.