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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 TypeConference Paper
Year of Publication2019
AuthorsM. A. Wayne, A. L. Migdall, Z. H. Levine, and J. C. Bienfang
EditorPR. Hemmer, AL. Migdall, and Z. UlHasan
Conference NameADVANCES IN PHOTONICS OF QUANTUM COMPUTING, MEMORY, AND COMMUNICATION XII
PublisherSPIE
ISBN Number978-1-5106-2509-9
KeywordsBell test, low latency, Quantum Information, random number generator, single-photon
Abstract

The low-latency requirements of a loophole-free Bell test prohibit time-consuming post-processing steps that arc 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 the Allan variance as a tool for characterizing non-idealities in the RNG and designing a feedback mechanism to account for and correct long-term drift. The impact of the feedback on the predictability of the output is less than 6.4 x 10(7), and results in a system capable of 24 hour operation with output that is statistically indistinguishable from a balanced Bernoulli process.

DOI10.1117/12.2514855