Offset simultaneous conjugate atom interferometers
Offset simultaneous conjugate atom interferometers
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DOI：
10.1103/physreva.101.053622
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发表时间：
2019-01
影响因子：
2.9
通讯作者：
Weicheng Zhong;Richard H. Parker;Z. Pagel;Chenghui Yu;H. Mȕller
中科院分区：
文献类型：
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作者：
Weicheng Zhong;Richard H. Parker;Z. Pagel;Chenghui Yu;H. Mȕller
将来自同步原子干涉仪的信号关联起来，已经能够最精确地确定一些基本常数。在这里，我们表明，多个同步干涉仪与战略选择的初始条件（偏移同步共轭干涉仪）可以提供测量或抑制特定信号和系统效应的多通道读出。我们创建两对同时共轭干涉仪和精确控制它们之间的偏移与布拉格衍射和布洛赫振荡。这使我们能够消除加速度梯度的影响，在许多原子干涉测量的主要系统的影响。它还将来自布拉格衍射分束器的不期望的衍射相位减少了6倍。这项工作为测量低于万亿分之十的精细结构常数铺平了道路。它也可以推广到同位素质量比测量。
Correlating the signals from simultaneous atom interferometers has enabled some of the most precise determinations of fundamental constants. Here, we show that multiple simultaneous interferometers with strategically chosen initial conditions (offset simultaneous conjugate interferometers) can provide multichannel readouts that measure or suppress specific signals and systematic effects. We create two pairs of simultaneous conjugate interferometers and precisely control the offset between them with Bragg diffraction and Bloch oscillations. This allows us to cancel the effect of acceleration gradients, a major systematic effect in many atom interferometry measurements. It also reduces the undesired diffraction phase from Bragg diffraction beam splitters by a factor of 6. This work paves the way for measurements of the fine-structure constant below the 10-part-per-trillion level. It can also be generalized for isotope-mass-ratio measurements.