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Q: Fachverband Quantenoptik und Photonik

Q 40: Poster: Quantum Optics and Photonics III

Q 40.10: Poster

Tuesday, March 6, 2018, 16:15–18:15, Zelt West

Prevention of Side-Channel Attacks in Timebin-Entanglement Based QKD Protocols — •Alexander Sauer and Gernot Alber — Institut für Angewandte Physik, Technische Universität Darmstadt

Bell tests are a crucial part of many key distribution protocols in quantum cryptography. To prevent side-channel attacks, it is necessary to close all loopholes in these tests, which might be exploited by an adversary. We investigate schemes based on timebin-entanglement with respect to their vulnerability to the fair-sampling loophole and the impact of detector inefficiencies. We propose a modified experimental setup to overcome the arising limitations of Franson-type interferometers [1].

[1] J. D. Franson, Phys. Rev. Lett. 62, 2205 (1989)