A method for fast magnetic field imaging based on coherent regulation of diamond NV color centers

CN121899723BActive Publication Date: 2026-05-29ZHONGBEI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHONGBEI UNIV
Filing Date
2026-03-26
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing magnetic field imaging methods based on diamond NV centers are complex to operate and require strict microwave control parameters, which limits measurement speed and widespread application.

Method used

By replacing Ramsey interferometric modulation with Rabi modulation and combining photodetector magnetic resonance technology and an sCMOS camera, Rabi curves are plotted and the change in magnetic field intensity is calculated through synchronous control sequence and fluorescence intensity acquisition, thus achieving rapid magnetic field imaging.

Benefits of technology

The operation steps were simplified, the requirements for microwave control parameters were reduced, the measurement speed was improved, and the goal of rapid magnetic field imaging was achieved.

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Abstract

The application relates to the technical field of magnetic field imaging, in particular to a fast magnetic field imaging method based on diamond NV color center coherent regulation. In order to solve the problem that the existing diamond NV color center-based magnetic field imaging method is complex to operate, a new fast magnetic field imaging method based on diamond NV color center coherent regulation is provided, and the method comprises the following steps: 1) setting the frequency of pulsed microwaves; 2) setting a synchronous control sequence, collecting fluorescence intensities of diamond NV color centers at different positions in a two-dimensional space; 3) drawing Rabi curves about time-fluorescence intensity corresponding to the different positions of the diamond NV color centers in the two-dimensional space; 4) obtaining actual angular frequencies corresponding to each Rabi curve; 5) calculating the magnetic field strength variation of the diamond NV color centers at different positions in the two-dimensional space; and 6) realizing magnetic field imaging. The method realizes the target of fast magnetic field imaging.
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Citation Information

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