Freiburg 2019 – wissenschaftliches Programm

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FM: Fall Meeting

FM 31: Secure Communication & Computation II

FM 31.1: Invited Talk

Dienstag, 24. September 2019, 14:00–14:30, 1009

Certifying randomness from quantum black-box devices — •Nicolas Brunner — Department of Applied Physics, University of Geneva, Switzerland

Besides its fundamental interest, randomness represents a key resource for many applications. Since quantum processes can be fundamentally random, they are ideally suited for the task of producing randomness. A strong research interest has thus been devoted to quantum randomness generation (QRNG), leading to first commercial products, but also to a deeper understanding of the concept of randomness in quantum theory. Current research explores the "device-independent" approach to QRNG, where quantum devices are viewed as black boxes. This represents a novel generation of QRNG protocols, achieving the highest level of security. Entropy can be estimated in real-time, based on minimal assumptions about the setup, allowing for the continuous generation of certified random numbers. Moreover, such schemes can now be implemented using only standard optical components and achieve rates comparable to commercial QRNG devices.