RSS icon
Twitter icon
Facebook icon
Vimeo icon
YouTube icon

A post-processing-free single-photon random number generator with ultra-low latency

TitleA post-processing-free single-photon random number generator with ultra-low latency
Publication TypeJournal Article
Year of Publication2018
AuthorsM. A. Wayne, A. L. Migdall, Z. H. Levine, and J. C. Bienfang
JournalOPTICS EXPRESS
Volume26
Pagination32788-32801
Date PublishedDEC 10
ISSN1094-4087
Abstract

The low-latency requirements of a practical loophole-free Bell test preclude time-consuming post-processing steps that are often used to improve the statistical quality of a physical random number generator (RNG). Here we demonstrate a post-processing-free RNG that produces a random bit within 2.4(2) ns of an input trigger. We use weak feedback to eliminate long-term drift, resulting in 24 hour operation with output that is statistically indistinguishable from a Bernoulli process. We quantify the impact of the feedback on the predictability of the output as less than 6.4x10(-7) and demonstrate the utility of the Allan variance as a tool for characterizing non-idealities in RNGs. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

DOI10.1364/OE.26.032788