We present a simple and robust construction of a real-time quantum random number generator (QRNG). Our minimalist approach ensures stable operation of the device as well as its simple and straightforward hardware implementation as a stand-alone module. As a source of randomness the device uses measurements of time intervals between clicks of a single-photon detector. The obtained raw sequence is then filtered and processed by a deterministic randomness extractor, which is realized as a look-up table. This enables high speed on-the-fly processing without the need of extensive computations. The overall performance of the device is around 1 random bit per detector click, resulting in 1.2 Mbit/s generation rate in our implementation.
@article{arxiv.1507.02059,
title = {Minimalist design of a robust real-time quantum random number generator},
author = {K. S. Kravtsov and I. V. Radchenko and S. P. Kulik and S. N. Molotkov},
journal= {arXiv preprint arXiv:1507.02059},
year = {2023}
}