This paper introduces a method for using an atomic magnetometer to suppress current source noise. In this method, the current noise is (i) suppressed with a lamp-pumped cesium atomic magnetometer and (ii) measured with a higher-sensitivity laser-pumped cesium atomic magnetometer. The current noise is compared before and after noise suppression at an output current of 50 mA, and the noise-suppression ratio is ∼27 dB. The noise-suppression performance can be enhanced by improving the sensitivity of the atomic magnetometer and the ability to restrain the ambient magnetic noise. This method has practical applications in metrology and fundamental physics research.

中文翻译：

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用原子磁力计抑制电流源噪声

本文介绍了一种利用原子磁力计抑制电流源噪声的方法。在这种方法中，电流噪声被 (i) 用灯泵浦铯原子磁强计抑制，(ii) 用更高灵敏度的激光泵浦铯原子磁强计测量。在输出电流为 50 mA 时比较噪声抑制前后的电流噪声，噪声抑制比约为 27 dB。通过提高原子磁强计的灵敏度和抑制环境磁噪声的能力，可以增强噪声抑制性能。该方法在计量学和基础物理研究中具有实际应用。