Three-Path Atom Interferometry with Large Momentum Separation
Three-Path Atom Interferometry with Large Momentum Separation
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DOI：
10.1103/physrevlett.121.133201
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发表时间：
2018-09-26
影响因子：
8.6
通讯作者：
Gupta, Subhadeep
中科院分区：
文献类型：
--
作者：
Plotkin-Swing, Benjamin;Gochnauer, Daniel;Gupta, Subhadeep
我们展示了一个对称的三路对比度干涉仪的大动量分离的规模。在分离112光子反冲动量时观察到的相位稳定性超过了早期自由空间干涉仪的性能。除了对称的干涉仪几何形状和玻色-爱因斯坦凝聚源，我们的方法的强大的可扩展性依赖于通过仔细选择原子光学参数抑制不需要的衍射相位。干涉仪相位演化与反冲数成二次关系，达到高达7 × 10（7）rad/s的速率。我们讨论了我们的方法对一个新的测量的精细结构常数和QED测试的适用性。
We demonstrate the scale up of a symmetric three-path contrast interferometer to large momentum separation. The observed phase stability at separation of 112 photon recoil momenta exceeds the performance of earlier free-space interferometers. In addition to the symmetric interferometer geometry and Bose-Einstein condensate source, the robust scalability of our approach relies on the suppression of undesired diffraction phases through a careful choice of atom optics parameters. The interferometer phase evolution is quadratic with number of recoils, reaching a rate as high as 7 x 10(7) rad/s. We discuss the applicability of our method towards a new measurement of the fine-structure constant and a test of QED.