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Freiburg 2019 – wissenschaftliches Programm

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FM: Fall Meeting

FM 7: Secure Communication & Computation I

FM 7.6: Talk

Montag, 23. September 2019, 15:30–15:45, 1009

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

We introduce a Device-Independent Quantum Key Distribution(DIQKD) scenario where a Bell inequality (BI) will be constructed fromthe performed measurement data instead of using a predetermined BI. Given the observed data of a DIQKD protocol involving n parties, m measurement settings per party and k outcomes per measurement, our goal is to find an optimal (n,m,k) BI which maximizes the achievable DI secret key rate [1].

References: [1] L. Masanes, S. Pironio, and A. Acin, *Secure device-independent quantum key distribution with causally independent measurement devices,* Nature Communications, vol. 2, p. 238, 2011.

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