SAMOP 2023 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 8: QI Poster I (joint session QI/Q)
Q 8.20: Poster
Monday, March 6, 2023, 16:30–19:00, Empore Lichthof
Designing versatile and performant DM-CV QKD systems for the QuNET initiative — •Stefan Richter1,2, Ömer Bayraktar1,2, Kevin Jaksch1,2, Bastian Hacker1,2, Imran Khan1,2,5, Emanuel Eichhammer1,5, Emmeran Sollner1,5, Twesh Upadhyaya3, Jie Lin3, Norbert Lütkenhaus3, Florian Kanitschar4, Stefan Petscharnig4, Thomas Grafenauer4, Ömer Bernhard4, Christoph Pacher4, Gerd Leuchs1,2, and Christoph Marquardt1,2 — 1Chair of Optical Quantum Technologies, Department of Physics, Friedrich Alexander University Erlangen-Nuremberg, Erlangen, Germany — 2Quantum Information Processing Group, MPI for the Science of Light, Erlangen, Germany — 3Institute for Quantum Computing, Dept. of Physics and Astronomy, University of Waterloo, Canada — 4Security & Communication Technologies Unit, Austrian Institute of Technology, Vienna, Austria — 5now with KEEQuant GmbH, Fürth, Germany
Continuous-variable quantum key distribution (CV-QKD) is a key technology for guarding critical communication links against the rapidly growing threat of large-scale quantum computers. We present our progress in implementing a versatile and performant CV-QKD system designed for metropolitan fiber optical networks. Important performance indicators estimated during a public technology demonstration in August 2021 and recent improvements will be discussed. We also highlight special design aspects and challenges of the implementation, in particular with regard to stability and error correction requirements.