Interference in Atomic Magnetometry
- URL: http://arxiv.org/abs/2010.05611v1
- Date: Mon, 12 Oct 2020 11:35:01 GMT
- Title: Interference in Atomic Magnetometry
- Authors: Min Jiang, Wenjie Xu, Qing Li, Ze Wu, Dieter Suter, Xinhua Peng
- Abstract summary: Atomic magnetometers are highly sensitive detectors of magnetic fields that monitor the evolution of the macroscopic magnetic moment of atomic vapors.
We uncover an unexplained interference effect in atomic magnetometers, which causes an important systematic effect to greatly deteriorate the accuracy of measuring magnetic fields.
We consider the effect of the interference in NMR structural determination and locating the brain electrophysiological symptom, and show that it will help to improve the measurement accuracy.
- Score: 6.902863458218047
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Atomic magnetometers are highly sensitive detectors of magnetic fields that
monitor the evolution of the macroscopic magnetic moment of atomic vapors, and
opening new applications in biological, physical, and chemical science.
However, the performance of atomic magnetometers is often limited by hidden
systematic effects that may cause misdiagnosis for a variety of applications,
e.g., in NMR and in biomagnetism. In this work, we uncover a hitherto
unexplained interference effect in atomic magnetometers, which causes an
important systematic effect to greatly deteriorate the accuracy of measuring
magnetic fields. We present a standard approach to detecting and characterizing
the interference effect in, but not limited to, atomic magnetometers. As
applications of our work, we consider the effect of the interference in NMR
structural determination and locating the brain electrophysiological symptom,
and show that it will help to improve the measurement accuracy by taking
interference effects into account. Through our experiments, we indeed find good
agreement between our prediction and the asymmetric amplitudes of resonant
lines in ultralow-field NMR spectra -- an effect that has not been understood
so far. We anticipate that our work will stimulate interesting new researches
for magnetic interference phenomena in a wide range of magnetometers and their
applications.
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