磁强计
塞曼效应
地球磁场
航向(导航)
超精细结构
磁场
物理
灵敏度(控制系统)
原子物理学
核磁共振
光学
材料科学
量子力学
大地测量学
电子工程
工程类
地理
作者
Rui Zhang,Dimitra Kanta,Arne Wickenbrock,Hong Guo,Dmitry Budker
标识
DOI:10.1103/physrevlett.130.153601
摘要
Alkali-metal atomic magnetometry is widely used due to its high sensitivity and cryogen-free operation. However, when operating in geomagnetic field, it suffers from heading errors originating from nonlinear Zeeman (NLZ) splittings and magnetic resonance asymmetries, which lead to difficulties in mobile-platform measurements. We demonstrate an alignment based $^{87}$Rb magnetometer, which, with only a single magnetic resonance peak and well-separated hyperfine transition frequencies, is insensitive or even immune to NLZ-related heading errors. It is shown that the magnetometer can be implemented for practical measurements in the geomagnetic environments and the photon-shot-noise-limited sensitivity reaches $9\,{\rm{fT}}/\sqrt{\rm{Hz}}$ at room temperature.
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