Quantum Key Distribution

The Photonic-Networks 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.

Projects