Truly random number generation via entropy amplification

TL;DR

This paper introduces a straightforward laser-based method for generating truly random numbers by measuring phase noise, achieving a high generation rate through entropy amplification techniques.

Contribution

It presents a simple setup utilizing laser phase noise measurement and a novel entropy amplification method to produce high-rate truly random bits.

Findings

Achieved a random bit generation rate of 300 Mbps.

Demonstrated effective entropy amplification using m-least-significant-bit method.

Estimated the number of truly random bits extractable from the laser phase noise measurement.

Abstract

We present a simple setup to implement truly random number generator based on the measurement of the laser phase noise. From the entropy point of view, we estimate the number of truly random bits that can be extracted from the sampled Byte. With a simple method of adopting the $m$-least-significant-bit, we amplify the entropy of the original bit sequence and realize a truly random bit generation rate of $300$ Mbps.