Real time demonstration of high bitrate quantum random number generation with coherent laser light

TL;DR

This paper demonstrates a real-time quantum random number generator using broadband vacuum field measurements from a laser, achieving up to 2 Gbps with high quantum correlation and environmental immunity.

Contribution

It introduces a novel scheme for high-speed quantum random number generation based on broadband laser vacuum measurements with robust algorithms.

Findings

Achieved 2 Gbps real-time random number generation.

Verified randomness with standard tests.

Demonstrated high quantum correlation and environmental immunity.

Abstract

We present a random number generation scheme that uses broadband measurements of the vacuum field contained in the radio-frequency sidebands of a single-mode laser. Even though the measurements may contain technical noise, we show that suitable algorithms can transform the digitized photocurrents into a string of random numbers that can be made arbitrarily correlated with a subset of the quantum fluctuations (high quantum correlation regime) or arbitrarily immune to environmental fluctuations (high environmental immunity). We demonstrate up to 2 Gbps of real time random number generation that were verified using standard randomness tests.