Field-gradient measurement using a Stern-Gerlach atomic interferometer with butterfly geometry
Field-gradient measurement using a Stern-Gerlach atomic interferometer with butterfly geometry
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DOI：
10.1103/physreva.102.053321
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发表时间：
2020-11
期刊：
影响因子：
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通讯作者：
Changhun Oh;Hyukjoon Kwon;Liang Jiang;M. Kim
中科院分区：
文献类型：
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作者：
Changhun Oh;Hyukjoon Kwon;Liang Jiang;M. Kim
原子干涉仪已被研究为一种有前途的精确传感外部场的设备。在各种配置中，具有蝴蝶形几何形状的特殊配置被设计用于灵敏地探测场梯度。我们通过在传统的蝶形结构中加入磁场来引入 Stern-Gerlach (SG) 蝶形干涉仪。通过控制磁场可以灵活调整干涉仪的原子轨迹，从而提高干涉仪的灵敏度，而传统的利用拉曼跃迁的蝶形干涉仪可以理解为一种特例。我们还表明，SG 干涉仪可以针对场梯度引起的位置和动量失准保持高对比度。
Atomic interferometers have been studied as a promising device for precise sensing of external fields. Among various configurations, a particular configuration with a butterfly-shaped geometry has been designed to sensitively probe field gradients. We introduce a Stern-Gerlach (SG) butterfly interferometer by incorporating magnetic field in the conventional butterfly-shaped configuration. Atomic trajectories of the interferometer can be flexibly adjusted by controlling magnetic fields to increase the sensitivity of the interferometer, while the conventional butterfly interferometer using Raman transitions can be understood as a special case. We also show that the SG interferometer can keep high contrast against a misalignment in position and momentum caused by the field gradient.