The Photonic Networks and Systems department works on the high-speed distribution of a cryptographic key by means of quantum communication. Both fiber and free-space (typ. satellite) transmissions are considered. We developped a system based on the time/frequency uncertainty where information is coded in either the arrival time or the frequency of photons around 1550 nm. Targeted design features are integration of telecom components and system duality for both classical and quantum communications.
Press Release
- Important success on the way to quantum communication networks: Second QuNET key experiment
- First quantum-secured videoconference between two federal agencies
- BMBF initiative "QuNET" presents systems for highly secure quantum communication
- A leap into quantum technology: Fraunhofer HHI participates in Q.Link.X project consortium, sponsored by the German Federal Ministry of Education and Research