宇航计测技术 ›› 2024, Vol. 44 ›› Issue (2): 98-102.doi: 10.12060/j.issn.1000-7202.2024.02.17

• 理论与前沿技术 • 上一篇    

基于相干布居囚禁的毫特级磁场测量方法研究

张樊1,2，汪东平1，易思岳1,2，程智勇1,2，谢胤1,2，裴华刚1,2   

  1. 1.中国船舶集团有限公司第七一〇研究所，宜昌 443003；
    2.国防科技工业弱磁一级计量站，宜昌 443003
  • 出版日期:2024-04-15 发布日期:2024-05-01
  • 作者简介:张樊（1989-），男，高级工程师，硕士，主要研究方向：量子磁传感器研究及弱磁计量。

Research on Measurement Method of Milli Tesla Class Magnetic Field Based on Coherent Population Trapping

ZHANG Fan1,2,WANG Dongping1,YI Siyue1,2,CHENG Zhiyong1,2,XIE Yin1,2,PEI Huagang1,2   

  1. 1.No.710 R & D Institute,CSSC,Yichang 443003,China;
    2.1st Class Weak Magnetic Metering Station of NDM,Yichang 443003,China
  • Online:2024-04-15 Published:2024-05-01

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摘要： 提出了一种基于相干布居囚禁原理的毫特级磁场测量方法，通过线偏振激光与87Rb原子相互作用，得到磁场下因核自旋引起分裂的CPT共振信号，并根据分裂开的两个CPT共振信号进行磁场测量，该方法可以消除高次塞曼效应引起的非线性误差，从而提高磁场测量的准确度，可为量子化毫特级恒定磁场标准的建立提供了一种新的技术方案。

关键词: 相干布居囚禁, 原子磁强计, 量子计量学

Abstract: A method to measure milli tesla class magnetic field by coherent population trapping effect is proposed.Using linearly polarized laser to interact with 87Rb atoms,two divided CPT resonance signals caused by the nucleus spins in the magnetic field is obtained,and the magnetic induction strength of the magnetic field is derived by analyzing the splitting distance between the two CPT resonance signals.This method can eliminate nonlinear error caused by the high-order term to improve the accuracy of measuring the milli tesla class magnetic field and provides a new scheme for the quantum standard of milli tesla magnetic field.

Key words: Coherent population trapping, Atomic magnetometer, Quantum metrology

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