# Quantum random number generator based on twin beams

## TL;DR

This paper demonstrates a method to generate high-rate quantum random numbers from twin beam intensity fluctuations, passing all standard randomness tests, and producing identical strings through post-processing.

## Contribution

It introduces a novel scheme for quantum random number generation using twin beams and achieves high bit rates with verified randomness and identical outputs.

## Key findings

- Bit rates up to 60 Mb/s achieved.
- Random numbers pass all NIST tests.
- Method enables generation of identical quantum random strings.

## Abstract

We produce two strings of quantum random numbers simultaneously from the intensity fluctuations of the twin beams generated by a nondegenerate optical parametric oscillator. Two strings of quantum random numbers with bit rates up to 60 Mb/s are extracted simultaneously with a suitable post-processing algorithm. By post-selecting the identical data from two raw sequences and using a suitable hash function, we also extract two strings of identical quantum random numbers. The obtained random numbers pass all NIST randomness tests. The presented scheme shows the feasibility of generating quantum random numbers from the intensity of a macroscopic optical field.