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A generator for unique quantum random numbers based on vacuum states

  • Random numbers are a valuable component in diverse applications that range from simulations over gambling to cryptography. The quest for true randomness in these applications has engendered a large variety of different proposals for producing random numbers based on the foundational unpredictability of quantum mechanics4,5,6,7,8,9,10,11. However, most approaches do not consider that a potential adversary could have knowledge about the generated numbers, so the numbers are not verifiably random and unique12,13,14,15. Here we present a simple experimental setup based on homodyne measurements that uses the purity of a continuous-variable quantum vacuum state to generate unique random numbers. We use the intrinsic randomness in measuring the quadratures of a mode in the lowest energy vacuum state, which cannot be correlated to any other state. The simplicity of our source, combined with its verifiably unique randomness, are important attributes for achieving high-reliability, high-speed and low-cost quantum random number generators.

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Metadaten
Author:Christian Gabriel, Christoffer Wittmann, Denis Sych, Ruifang Dong, Wolfgang MauererORCiDGND, Ulrik L. Andersen, Christoph Marquardt, Gerd Leuchs
DOI:https://doi.org/10.1038/nphoton.2010.197
Parent Title (English):Nature Photonics
Publisher:Springer
Document Type:Article
Language:English
Year of first Publication:2010
Creating Corporation:Springer
Release Date:2022/11/24
Volume:4
Issue:10
First Page:711
Last Page:715
Institutes:Fakultät Informatik und Mathematik
Fakultät Informatik und Mathematik / Labor für Digitalisierung (LFD)
Begutachtungsstatus:peer-reviewed
Publication:Externe Publikationen
research focus:Digitalisierung
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG