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Magnetic field regression using artificial neural networks for cold atom experiments

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Accurately measuring magnetic fields is essential for magnetic-field sensitive experiments in areas like atomic,molec-ular,and optical physics,condensed matter experiments,and other areas.However,since many experiments are often con-ducted 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.

ultracold gasestrapped gasesmeasurement methods and instrumentation

陈子霆、黃建陶、Bojeong Seo、黄明琛、Mithilesh K.Parit、何逸飞、甄浩廷、Jensen Li、Gyu-Boong Jo

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Department of Physics,The Hong Kong University of Science and Technology,Kowloon 999077,China

RGC of ChinaRGC of ChinaRGC of ChinaRGC of ChinaRGC of ChinaRGC of ChinaRGC of ChinaRGC of China

1630611916302420163028211630632116306922C6009-20GN-HKUST636-22RFS2122-6S04

2024

10.1088/1674-1056/ad0cc8

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(2)
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