Hybrid Quantum Link
Free-Space + Fiber Link Testbeds
Hybrid Quantum Link
Fraunhofer IOF
Qu-Test
Hybrid: free-space + fiber link is available for quantum communication testing. The short (300m) and long (75km) fiber link are available. High efficient SNSPDs at 810nm and 1550nm are available and different type of quantum sources and measurement equipment. BBM92 and BB84 QKD live demos are set and classical communication is established in separate channel. Adaptive optics and spatial filtering allows the light-day measurement. Fiber link has the dispersion compensation and advanced polarization compensation. *Note that long fiber link is also affected by weather conditions due to 6km of hanged fiber part. ** Possibility to connect with optical ground station for LEO quantum satellite communication.
Free-Space link
Free-Space link for 810 and 1550nm qunatum communication
Optical Ground Station
Optical Ground Station ready for quantum satellite communicatio at LEO.
Communication
Photonics 
Testing  Measurements