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Accurate magnetic field imaging using nanodiamond quantum sensors enhanced by machine learning. 2022

Moeta Tsukamoto, and Shuji Ito, and Kensuke Ogawa, and Yuto Ashida, and Kento Sasaki, and Kensuke Kobayashi
Department of Physics, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan. moeta.tsukamoto@phys.s.u-tokyo.ac.jp.

Nanodiamonds can be excellent quantum sensors for local magnetic field measurements. We demonstrate magnetic field imaging with high accuracy of 1.8 [Formula: see text]T combining nanodiamond ensemble (NDE) and machine learning without any physical models. We discover the dependence of the NDE signal on the field direction, suggesting the application of NDE for vector magnetometry and the improvement of the existing model. Our method enhances the NDE performance sufficiently to visualize nano-magnetism and mesoscopic current and expands the applicability of NDE in arbitrarily shaped materials, including living organisms. This accomplishment bridges machine learning to quantum sensing for accurate measurements.

UI MeSH Term Description Entries
D003952 Diagnostic Imaging Any visual display of structural or functional patterns of organs or tissues for diagnostic evaluation. It includes measuring physiologic and metabolic responses to physical and chemical stimuli, as well as ultramicroscopy. Imaging, Diagnostic,Imaging, Medical,Medical Imaging
D000069550 Machine Learning A type of ARTIFICIAL INTELLIGENCE that enable COMPUTERS to independently initiate and execute LEARNING when exposed to new data. Transfer Learning,Learning, Machine,Learning, Transfer
D058612 Nanodiamonds Diamond nanoparticles that exhibit unique biological, thermal, mechanical, and optoelectronic properties. They have important NANOMEDICINE applications including DRUG DELIVERY SYSTEMS; DIAGNOSTIC IMAGING; protein separation; and BIOSENSING TECHNIQUES. Nanodiamond
D060306 Magnetometry The measurement of various aspects of MAGNETIC FIELDS.
D060526 Magnetic Fields Areas of attractive or repulsive force surrounding MAGNETS. Magnetic Field,Field, Magnetic,Fields, Magnetic

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