A differential-based diamond nv color center fluorescence detection method and quantum sensor
By separating and adjusting the fluorescence and laser signals of the diamond NV color center in a magnetic field-free environment to make the differential signal zero, and using the incremental signal to characterize the real-time detection value, the problem of poor common-mode noise suppression in existing technologies is solved, and the measurement accuracy is improved.
CN116952921BActive Publication Date: 2026-06-02STATE GRID ANHUI ELECTRIC POWER CO LTD ELECTRIC POWER SCI RES INST +1
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Patent Information
- Application Number
- CN202311033322.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-16
- Publication Date
- 2026-06-02
- Estimated Expiration
- 2043-08-16
AI Technical Summary
Technical Problem
Existing differential noise reduction methods are ineffective at suppressing common-mode noise when the probe value changes.
Method used
In a magnetic field-free environment, the fluorescence and laser signals of the diamond NV color center are separated, the gain is adjusted to make the differential signal zero, and the real-time detection value is characterized by the incremental signal. Combined with microwave radiation, the laser gain is adjusted to suppress common-mode noise.
Benefits of technology
It effectively suppresses common-mode noise caused by fluorescence changes during fluorescence detection, thus improving measurement accuracy.
✦ Generated by Eureka AI based on patent content.
Abstract
The application provides a differential-based diamond NV color center fluorescence detection method and a quantum sensor, wherein fluorescence generated by the diamond is separated from laser mixed in the fluorescence, and then is collected respectively and is subjected to differential processing; during the initial and detection processes, the laser is subjected to gain adjustment, so that the difference is kept to be zero, and the detection of the fluorescence change amount is converted into the change amount of the gain through an output gain increment; on one hand, when the fluorescence is collected, the laser is separated for differential processing, so that the structure elements can be simplified and unnecessary noise interference can be reduced; on the other hand, the gain increment of the laser relative to the fluorescence is used to represent the fluorescence detection value, so that common-mode noise changing with the continuous change of the fluorescence during the detection process can be better inhibited, and the measurement accuracy of the system is improved.
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