Erlangen 2018 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 40: Poster: Quantum Optics and Photonics III

Q 40.4: Poster

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

Device-independent secret key rate from optimized Bell inequality violation — •Sarnava Datta, Hermann Kampermann, and Dagmar Bruß — Institut für Theoretische Physik III, Heinrich-Heine-Universität Düsseldorf, Universitätstraße 1, D-40225, Düsseldorf, Germany

Quantum Key distribution (QKD) is well established and starts entering in the commercial realm. However, due to divergence between theoretical models and practical devices, the security of such systems cannot be ensured. We consider the device-independent (DI) scenario, which avoids these problems. Our goal is to find an improved optimal Bell inequality violation using classical measurement data of a DIQKD protocol and to use this to find optimized bounds on the achievable DI secret key rate [1].

Reference

[1] L. Masanes, S. Pironio, and A. Acín , Nat. Commun. 2, 238 (2011).