Hannover 2020 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 39: Posters: Quantum Optics and Photonics III

Q 39.53: Poster

Wednesday, March 11, 2020, 16:30–18:30, Empore Lichthof

Test of a time-bin entanglement-based QKD system in a commercial optical link — •Jakob Kaltwasser, Erik Fitzke, Oleg Nikiforov, Maximilian Tippmann, and Thomas Walther — AG Laser und Quantenoptik, Institut für Angewandte Physik, Technische Universität Darmstadt, Schlossgartenstraße 7, 64289 Darmstadt, Germany

Quantum Key Distribution has significant relevance in further development of cryptographic data exchange and key distribution systems. It offers new aspects of enhancement in security for key distribution compared to classical protocols. We are working on a time-bin entanglement-based system for quantum key distribution which is developed and tested in a commercial telecommunication environment. This non-laboratory environment has challenging aspects especially with respect to a portable and compact system as well as a high instability of temperature and noise background and its effects on the system. Consequently we developed a compact optical-fiber-based system for the photon-pair source. In this contribution we discuss the recent progress of our experiment and present our latest results.