Abstract
We demonstrate extraction of randomness from spontaneous-emission events less than 36 ns in the past, giving output bits with excess predictability below and strong metrological randomness assurances. This randomness generation strategy satisfies the stringent requirements for unpredictable basis choices in current “loophole-free Bell tests” of local realism [Hensen et al., Nature (London) 526, 682 (2015); Giustina et al., this issue, Phys. Rev. Lett. 115, 250401 (2015); Shalm et al., preceding Letter, Phys. Rev. Lett. 115, 250402 (2015)].
- Received 16 October 2015
DOI:https://doi.org/10.1103/PhysRevLett.115.250403
© 2015 American Physical Society
Physics Subject Headings (PhySH)
Synopsis
Gauging Randomness for Loophole-free Quantum Tests
Published 16 December 2015
A fast random number generator based on laser dynamics helps test the foundations of quantum physics.
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