# Chaotic laser based physical random bit streaming system with a computer application interface

## TL;DR

This paper presents a high-throughput, chaos laser-based physical random bit streaming system with real-time bias correction, validated by standard statistical tests, suitable for computer applications.

## Contribution

It introduces a novel chaotic laser entropy source with real-time bias reduction, achieving 4 Gbps random bit generation for computer memory.

## Key findings

- Achieved 4 Gbps random bit throughput.
- Passed NIST SP800-22 test suite with 65-75% pass rate.
- Demonstrated stable long-term operation.

## Abstract

We demonstrate a random bit streaming system that uses a chaotic laser as its physical entropy source. By performing real-time bit manipulation for bias reduction, we were able to provide the memory of a personal computer with a constant supply of ready-to-use physical random bits at a throughput of up to 4 Gbps. We pay special attention to the end-to-end entropy source model describing how the entropy from physical sources is converted into bit entropy. We confirmed the statistical quality of the generated random bits by revealing the pass rate of the NIST SP800-22 test suite to be 65 % to 75 %, which is commonly considered acceptable for a reliable random bit generator. We also confirmed the stable operation of our random bit steaming system with long-term bias monitoring.