Suppression of current source noise with an atomic magnetometer

被引：16

作者：

Shen, Liang ^{[1
,2
,3
]}

Zhang, Rui ^{[2
,3
,4
,5
]}

Wu, Teng ^{[2
,3
]}

Peng, Xiang ^{[2
,3
]}

Yu, Song ^{[1
]}

Chen, Jingbiao ^{[2
,3
]}

Guo, Hong ^{[2
,3
]}

机构：

[1] Beijing Univ Posts & Telecommun, Inst Informat Photon & Opt Commun, Beijing 100876, Peoples R China

[2] Peking Univ, State Key Lab Adv Opt Commun Syst & Networks, Dept Elect, Beijing 100871, Peoples R China

[3] Peking Univ, Ctr Quantum Informat Technol, Beijing 100871, Peoples R China

[4] Natl Univ Def Technol, Coll Liberal Arts & Sci, Changsha 410073, Peoples R China

[5] Natl Univ Def Technol, Interdisciplinary Ctr Quantum Informat, Changsha 410073, Peoples R China

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2020年 / 91卷 / 08期

基金：

中国国家自然科学基金;

关键词：

SELF-OSCILLATING MAGNETOMETER; RELAXATION;

D O I：

10.1063/5.0009987

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

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 similar to 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.

引用

页数：6

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