# Experimental demonstration of a high speed quantum random number generation scheme based on measuring phase noise of a single mode laser

## TL;DR

This paper demonstrates a high-speed quantum random number generator using phase noise measurement of a diode laser, achieving 500 Mbit/s and passing standard randomness tests.

## Contribution

It introduces a novel high-speed quantum random number generation method based on phase noise measurement with active phase stabilization.

## Key findings

- Achieved 500 Mbit/s random number generation rate.
- Generated random numbers passed all DIEHARD tests.
- Utilized a delayed self-heterodyning system for phase noise measurement.

## Abstract

We present a high speed random number generation scheme based on measuring the quantum phase noise of a single mode diode laser operating at a low intensity level near the lasing threshold. A delayed self-heterodyning system has been developed to measure the random phase fluctuation.By actively stabilizing the phase of the fiber interferometer, a random number generation rate of 500Mbit/s has been demonstrated and the generated random numbers have passed all the DIEHARD tests.