We present a random number generation scheme that uses broadband measurements of the vacuum field contained in the radio-frequency sidebands of a single-mode laser. Even though the measurements may contain technical noise, we show that suitable algorithms can transform the digitized photocurrents into a string of random numbers that can be made arbitrarily correlated with a subset of the quantum fluctuations (high quantum correlation regime) or arbitrarily immune to environmental fluctuations (high environmental immunity). We demonstrate up to 2 Gbps of real time random number generation that were verified using standard randomness tests.
@article{arxiv.1107.4438,
title = {Real time demonstration of high bitrate quantum random number generation with coherent laser light},
author = {T. Symul and S. M. Assad and P. K. Lam},
journal= {arXiv preprint arXiv:1107.4438},
year = {2011}
}