We describe the generation of sequences of random bits from the parity of photon counts produced by polarization measurements on a polarization-entangled state. The resulting sequences are bias free, pass the applicable tests in the NIST battery of statistical randomness tests, and are shown to be Borel normal, without the need for experimental calibration stages or postprocessing of the output. Because the photon counts are produced in the course of a measurement of the violation of the Clauser-Horne-Shimony-Holt inequality, we are able to concurrently verify the nonclassical nature of the photon statistics and estimate a lower bound on the min-entropy of the bit-generating source. The rate of bit production in our experiment is around 13 bits/s.
@article{arxiv.2006.11425,
title = {Parity-based, bias-free optical quantum random number generation with min-entropy estimation},
author = {Mathew R. Coleman and Kaylin G. Ingalls and John T. Kavulich and Sawyer J. Kemmerly and Nicolas C. Salinas and Efrain Venegas Ramirez and Maximilian Schlosshauer},
journal= {arXiv preprint arXiv:2006.11425},
year = {2020}
}