arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1711.09986physics.atom-phgr-qcquant-ph
收藏

等效原理原子干涉实验中的有效惯性系

Effective inertial frame in an atom interferometric test of the equivalence principle

Chris Overstreet, Peter Asenbaum, Tim Kovachy, Remy Notermans, Jason M. Hogan, Mark A. Kasevich

摘要:

在等效原理的理想试验中,试验质量落在一个共同的惯性系中。实际实验受重力梯度的影响,重力梯度通过耦合到测试质量之间的初始运动学差异而引入系统误差。我们展示了一种方法,通过使用镜脉冲的频移来为两个原子物种创建一个有效的惯性系,从而降低了双物种原子干涉仪对初始运动学的灵敏度。这抑制了重力梯度引起的依赖性的微分相位上的初始运动学差异的一个因素为100,并使这些差异的精确测量。我们实现了$Δg / g \approx 6 \times 10^{-11}$每次拍摄的相对精度,这提高了最好的双物种原子干涉仪以前的结果超过三个数量级。通过将重力梯度系统误差抑制到低于$10^{13}$的一部分,这些结果为等效原理的原子测试铺平了道路,其精度可与最先进的经典测试相媲美。

英文摘要:

In an ideal test of the equivalence principle, the test masses fall in a common inertial frame. A real experiment is affected by gravity gradients, which introduce systematic errors by coupling to initial kinematic differences between the test masses. We demonstrate a method that reduces the sensitivity of a dual-species atom interferometer to initial kinematics by using a frequency shift of the mirror pulse to create an effective inertial frame for both atomic species. This suppresses the gravity-gradient-induced dependence of the differential phase on initial kinematic differences by a factor of 100 and enables a precise measurement of these differences. We realize a relative precision of $Δg / g \approx 6 \times 10^{-11}$ per shot, which improves on the best previous result for a dual-species atom interferometer by more than three orders of magnitude. By suppressing gravity gradient systematic errors to below one part in $10^{13}$, these results pave the way for an atomic test of the equivalence principle at an accuracy comparable with state-of-the-art classical tests.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑