The Department of Photonic Networks and Systems is working on the rapid distribution of cryptographic keys using quantum communication. Both fiber-based and free-space (typically satellite) transmissions are being considered. We have developed a system based on time/frequency uncertainty, in which information is encoded either in the arrival time or in the frequency of photons within the 1550 nm wavelength range. The research focuses on optimizing system components as well as enabling the joint use of classical and quantum communication over the same medium.
Press Release
- Industry workshop of the QuNET initiative
- 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