SAMOP 2023 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 15: Quantum Communication (joint session Q/QI)
Q 15.8: Talk
Monday, March 6, 2023, 18:45–19:00, F442
Development and characterization of a high-rate receiver for satellite-based QKD — •Conrad Rößler1,2, Kevin Günthner1,2, Bastian Hacker1,2, Gerd Leuchs1,2, and Christoph Marquardt1,2 — 1Max Planck Institute for the Science of Light, Staudtstr. 2, 91058 Erlangen, Germany — 2Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudstr. 7/A3, 91058 Erlangen, Germany
Since the famous BB84 protocol was proposed in 1984, QKD has evolved to a very mature and promising quantum technology. While classical communication is being threatened by the approach of quantum computers, QKD offers an information theoretical secure way to share a key between two parties. Our high-rate receiver is designed and tested for phase-encoded satellite-based QKD. We present the corresponding discrete variable QKD protocol as well as the concept and characterization of our photon-detection-based phase locking and time synchronization of sender and receiver.