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

Michael A. Wayne; Alan L. Migdall; Zachary H. Levine; Joshua C. Bienfang

doi:10.1117/12.2514855

4 March 2019 A post-processing-free single-photon random number generator with ultra-low latency

Michael A. Wayne, Alan L. Migdall, Zachary H. Levine, Joshua C. Bienfang

Proceedings Volume 10933, Advances in Photonics of Quantum Computing, Memory, and Communication XII; 109330F (2019) https://doi.org/10.1117/12.2514855
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

The low-latency requirements of a loophole-free Bell test prohibit 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 postprocessing-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 × 10⁷ , and results in a system capable of 24 hour operation with output that is statistically indistinguishable from a balanced Bernoulli process.

Conference Presentation

Citation Download Citation

Michael A. Wayne, Alan L. Migdall, Zachary H. Levine, and Joshua C. Bienfang "A post-processing-free single-photon random number generator with ultra-low latency", Proc. SPIE 10933, Advances in Photonics of Quantum Computing, Memory, and Communication XII, 109330F (4 March 2019); https://doi.org/10.1117/12.2514855

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