Entwicklung eines schnellen optischen Quanten-Zufallsgenerators

TL;DR

This paper presents a high-speed quantum random number generator using quantum vacuum states amplified by a laser, achieving 25 Gbit/s and outperforming previous systems through detailed characterization and data processing.

Contribution

It introduces a novel setup for a quantum random number generator that attains significantly higher rates by using quantum vacuum states and advanced data processing techniques.

Findings

Achieved a random number generation rate of 25 Gbit/s.

Demonstrated the system's ability to produce true and unique random numbers.

Optimized data processing through Fourier transformation and entropy calculation.

Abstract

This work reports on setup, characterisation and data processing of a true quantum random number generator. As a randomness source a pure quantum vacuum state of light is used, which is amplified by a laser beam. Performance and behaviour of the system as well as parasitic errors are investigated. For an optimized exploitation of the data they are Fourier-transformed and processed further as frequency amplitudes. The extractable entropy in that data is calculated to allow for elimination of non-random signal contributions by hashing. The system is able to produce true and unique random numbers at a rate of 25 Gbit/s and thus outperforms previous implementations considerably.