Abellán Carlos, Amaya Waldimar, Mitrani Daniel, Pruneri Valerio, Mitchell Morgan W
ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain.
ICREA-Institució Catalana de Recerca i Estudis Avançats, 08015 Barcelona, Spain.
Phys Rev Lett. 2015 Dec 18;115(25):250403. doi: 10.1103/PhysRevLett.115.250403. Epub 2015 Dec 16.
We demonstrate extraction of randomness from spontaneous-emission events less than 36 ns in the past, giving output bits with excess predictability below 10^{-5} 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)].
我们展示了从过去小于36纳秒的自发发射事件中提取随机性，给出了超额可预测性低于10^(-5)的输出比特以及强大的计量随机性保证。这种随机性生成策略满足了当前局域实在性的“无漏洞贝尔测试”[亨森等人，《自然》（伦敦）526, 682 (2015)；朱斯蒂娜等人，本期，《物理评论快报》115, 250401 (2015)；沙尔姆等人，前一篇快报，《物理评论快报》115, 250402 (2015)]中对不可预测基选择的严格要求。
