Quantum entropy model of an integrated QRNG chip

TL;DR

This paper introduces a physical quantum entropy model for a QRNG chip based on photon number fluctuations, demonstrating high entropy and robustness against temporal fluctuations, advancing secure quantum random number generation.

Contribution

The paper develops a novel physical model for a QRNG chip's entropy source, accurately estimating quantum min-entropy without post-processing and confirming security robustness over time.

Findings

Quantum min-entropy exceeds 0.98 per bit

Model confirms robustness against fluctuations over time

Secure quantum random number generation demonstrated

Abstract

We present the physical model for the entropy source of a quantum random number generator chip based on the quantum fluctuations of the photon number emitted by light-emitting diodes. This model, combined with a characterization of the chip, estimates a quantum min-entropy of over 0.98 per bit without post-processing. Finally, we show with our model that the performances in terms of security are robust against fluctuations over time.