论文标题
地球范围内无标题 - 无误原子磁力测定法
Heading-error-free optical atomic magnetometry in the Earth-field range
论文作者
论文摘要
碱金属原子磁力测定法由于其高灵敏度和无低温操作而被广泛使用。但是，当在地磁领域运行时，它的标题误差源于非线性Zeeman（NLZ）分裂和磁共振不对称，这导致了移动平台测量的困难。我们展示了基于对齐的$^{87} $ rb磁力计，该磁力计具有单个磁共振峰和分离良好的超精细过渡频率，对与NLZ相关的标题误差不敏感甚至免疫。结果表明，可以在地磁环境中实现磁力计用于实用测量，并且光子射击量有限的灵敏度达到$ 9 \，{\ rm {ft}}/\ sqrt {\ rm {hz}}} $。
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.
