Experimental fast quantum random number generation using high-dimensional entanglement with entropy monitoring

TL;DR

This paper presents a high-speed quantum random number generator leveraging high-dimensional entanglement and real-time entropy monitoring, achieving 24 Mbit/s without detailed device characterization.

Contribution

It introduces a novel QRNG method that uses high-dimensional entanglement and entropy monitoring to generate high-rate genuine randomness without detailed device calibration.

Findings

Achieved 24 Mbit/s random number generation rate.

Real-time entropy monitoring via nonlocal quantum interference.

Demonstrated robustness with trusted but error-prone devices.

Abstract

A quantum random number generator (QRNG) generates genuine randomness from the intrinsic probabilistic nature of quantum mechanics. The central problems for most QRNGs are estimating the entropy of the genuine randomness and producing such randomness at high rates. Here we propose and demonstrate a proof-of-concept QRNG that operates at a high rate of 24 Mbit/s by means of a high-dimensional entanglement system, in which the user monitors the entropy in real time via the observation of a nonlocal quantum interference, without a detailed characterization of the devices. Our work provides an important approach to a robust QRNG with trusted but error-prone devices.