Efficient Adiabatic Spin-Dependent Kicks in an Atom Interferometer
Efficient Adiabatic Spin-Dependent Kicks in an Atom Interferometer
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DOI：
10.1103/physrevlett.121.040402
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发表时间：
2018-07-24
影响因子：
8.6
通讯作者：
Hamilton, Paul
中科院分区：
文献类型：
--
作者：
Jaffe, Matt;Xu, Victoria;Hamilton, Paul
我们提出了一种原子干涉技术，其中分束器分为两个单独的操作。微波脉冲首先产生自旋态叠加，然后光学绝热通道在空间上分离该叠加的臂。尽管使用热原子样品在一个小的（600 μ m）干涉光束，这个程序提供了99%的效率每香港的动量分离。利用这种效率，我们首先展示了高达16（h）的干涉树皮动量分裂和自由落体有限的询问时间。然后，我们实现了一个单源梯度计，其中两个干涉仪测量的相对相位来自同一个原子波函数。最后，我们展示了一个共振干涉仪与超过100绝热通道，从而超过400（h）超过树皮总动量转移。
We present an atom interferometry technique in which the beam splitter is split into two separate operations. A microwave pulse first creates a spin-state superposition, before optical adiabatic passage spatially separates the arms of that superposition. Despite using a thermal atom sample in a small (600 mu m) interferometry beam, this procedure delivers an efficiency of 99% per hk of momentum separation. Utilizing this efficiency, we first demonstrate interferometry with up to 16 (h) over bark momentum splitting and free-fall limited interrogation times. We then realize a single-source gradiometer, in which two interferometers measuring a relative phase originate from the same atomic wave function. Finally, we demonstrate a resonant interferometer with over 100 adiabatic passages, and thus over 400 (h) over bark total momentum transferred.