中国物理B ›› 2024, Vol. 33 ›› Issue (2): 26701-026701.doi: 10.1088/1674-1056/ad0cc8

• • 上一篇    下一篇

Magnetic field regression using artificial neural networks for cold atom experiments

Ziting Chen(陈子霆), Kin To Wong(黃建陶), Bojeong Seo, Mingchen Huang(黄明琛), Mithilesh K. Parit, Yifei He(何逸飞), Haoting Zhen(甄浩廷), Jensen Li, and Gyu-Boong Jo   

  1. Department of Physics, The Hong Kong University of Science and Technology, Kowloon 999077, China
  • 收稿日期:2023-08-07 修回日期:2023-10-16 接受日期:2023-11-16 出版日期:2024-01-16 发布日期:2024-01-19
  • 通讯作者: Gyu-Boong Jo E-mail:gbjo@ust.hk
  • 基金资助:
    Project supported by the RGC of China (Grant Nos. 16306119, 16302420, 16302821, 16306321, 16306922, C6009-20G, N-HKUST636-22, and RFS2122-6S04).

Magnetic field regression using artificial neural networks for cold atom experiments

Ziting Chen(陈子霆), Kin To Wong(黃建陶), Bojeong Seo, Mingchen Huang(黄明琛), Mithilesh K. Parit, Yifei He(何逸飞), Haoting Zhen(甄浩廷), Jensen Li, and Gyu-Boong Jo   

  1. Department of Physics, The Hong Kong University of Science and Technology, Kowloon 999077, China
  • Received:2023-08-07 Revised:2023-10-16 Accepted:2023-11-16 Online:2024-01-16 Published:2024-01-19
  • Contact: Gyu-Boong Jo E-mail:gbjo@ust.hk
  • Supported by:
    Project supported by the RGC of China (Grant Nos. 16306119, 16302420, 16302821, 16306321, 16306922, C6009-20G, N-HKUST636-22, and RFS2122-6S04).

摘要: Accurately measuring magnetic fields is essential for magnetic-field sensitive experiments in areas like atomic, molecular, and optical physics, condensed matter experiments, and other areas. However, since many experiments are often conducted in an isolated environment that is inaccessible to experimentalists, it can be challenging to accurately determine the magnetic field at the target location. Here, we propose an efficient method for detecting magnetic fields with the assistance of an artificial neural network (NN). Instead of measuring the magnetic field directly at the desired location, we detect fields at several surrounding positions, and a trained NN can accurately predict the magnetic field at the target location. After training, we achieve a below 0.3% relative prediction error of magnetic field magnitude at the center of the vacuum chamber, and successfully apply this method to our erbium quantum gas apparatus for accurate calibration of magnetic field and long-term monitoring of environmental stray magnetic field. The demonstrated approach significantly simplifies the process of determining magnetic fields in isolated environments and can be applied to various research fields across a wide range of magnetic field magnitudes.

关键词: ultracold gases, trapped gases, measurement methods and instrumentation

Abstract: Accurately measuring magnetic fields is essential for magnetic-field sensitive experiments in areas like atomic, molecular, and optical physics, condensed matter experiments, and other areas. However, since many experiments are often conducted in an isolated environment that is inaccessible to experimentalists, it can be challenging to accurately determine the magnetic field at the target location. Here, we propose an efficient method for detecting magnetic fields with the assistance of an artificial neural network (NN). Instead of measuring the magnetic field directly at the desired location, we detect fields at several surrounding positions, and a trained NN can accurately predict the magnetic field at the target location. After training, we achieve a below 0.3% relative prediction error of magnetic field magnitude at the center of the vacuum chamber, and successfully apply this method to our erbium quantum gas apparatus for accurate calibration of magnetic field and long-term monitoring of environmental stray magnetic field. The demonstrated approach significantly simplifies the process of determining magnetic fields in isolated environments and can be applied to various research fields across a wide range of magnetic field magnitudes.

Key words: ultracold gases, trapped gases, measurement methods and instrumentation

中图分类号:  (Ultracold gases, trapped gases)

  • 67.85.-d
43.20.Ye (Measurement methods and instrumentation)