Rostock 2019 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 45: Quantum Information (Quantum Communication) II

Q 45.2: Talk

Thursday, March 14, 2019, 10:45–11:00, S HS 002 Chemie

Towards a 1 Gbit/s quantum random number generator — •Benedict Tohermes, Julian Göttsch, Sebastian Steinlechner, and Roman Schnabel — Institut für Laserphysik und Zentrum für Optische Quantentechnologie, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Deutschland

With higher speeds being achieved in quantum key distribution and rising demand for random keys in regular cryptography, the need for fast quantum random number generators arises. A common implementation of such a random number generator employs quadrature measurements of an optical vacuum state as its entropy source, using balanced homodyne detection. Here we report on our progress for such a setup with a target bit rate of 1 Gbit/s. We present our implementation and discuss the signal processing steps that are required to achieve a high bit rate while ensuring randomness of generated keys.