论文标题
$ 10^{-12} $ Level的等价原理的Atom Intertermotem测试
Atom-interferometric test of the equivalence principle at the $10^{-12}$ level
论文作者
论文摘要
重力会影响局部测量吗？我们使用$ 2 \，\ text {s} $自由下落的时间来测量$^{85} $ rb和$^{87} $ rb波浪包之间的相对加速度。通过校准干涉仪的角度和频率来抑制同位素之间的运动差异引起的系统误差。我们发现$η= [1.6 \; \下午\; 1.8 \; \ text {（stat）} \; \ pm \; 3.4 \; \ text {（sys）}] \ times 10^{ - 12} $，与零违反等价原理一致。每次拍摄的最高为$ 1.4 \ times 10^{ - 11} \，g $，我们表现出对$η$ of $ 5.4 \ times 10^{ - 11} \，/\ sqrt {\ text {hz}} $的敏感性。
Does gravity influence local measurements? We use a dual-species atom interferometer with $2\,\text{s}$ of free-fall time to measure the relative acceleration between $^{85}$Rb and $^{87}$Rb wave packets in the Earth's gravitational field. Systematic errors arising from kinematic differences between the isotopes are suppressed by calibrating the angles and frequencies of the interferometry beams. We find an Eötvös parameter of $η= [1.6\; \pm\; 1.8\; \text{(stat)}\; \pm \; 3.4 \; \text{(sys)}] \times 10^{-12}$, consistent with zero violation of the equivalence principle. With a resolution of up to $1.4 \times 10^{-11} \, g$ per shot, we demonstrate a sensitivity to $η$ of $5.4 \times 10^{-11}\,/\sqrt{\text{Hz}}$.
