Three-axis solid-state atomic magnetic sensor based on diamond NV color center and magnetic field detecting method

A magnetic sensor, diamond technology, applied in the field of quantum sensors, can solve the problem of accurate measurement of static weak magnetic field and rarely reported

Active Publication Date: 2018-09-11
ZHONGBEI UNIV
View PDF5 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There have been studies using the NV color center system for the weak magnetic measurement of single nuclear s

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Three-axis solid-state atomic magnetic sensor based on diamond NV color center and magnetic field detecting method
  • Three-axis solid-state atomic magnetic sensor based on diamond NV color center and magnetic field detecting method
  • Three-axis solid-state atomic magnetic sensor based on diamond NV color center and magnetic field detecting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023]

[0024] Such as image 3 As shown, the system based on diamond NV color center weak magnetic field detection consists of signal source 1, microwave 2, circular microwave antenna 3 (permalloy), magnetic field device 4, (NV color center) diamond 5, laser 6, and digital Oscilloscope 7, lock-in amplifier 8, magnetic shield 9, optical filter 10, plano-convex mirror 11, photodetector 12 and dichroic mirror 13.

[0025] The laser light emitted by the laser 6 is irradiated to the NV color center of the diamond 5 through the dichroic mirror 13, the microwave generated by the microwave 2 is emitted through the circular microwave antenna 3 and acts on the NV color center of the diamond 5, and the magnetic field device 4 applies a magnetic field On the NV color center of diamond 5; the fluorescence generated by the excitation of the NV color center o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The method of the invention includes that a spin triplet state electronic ground state based on a diamond NV color center uses the diamond NV color center as a sensitive component under different magnetic field conditions, and the NV color center is excited by the laser 532 nm; the NV color center emits fluorescence through external microwave, and further, an ODMR spectrum is obtained. Three pairsof distinct Zeeman split peaks can be extracted from the spectrum, and the resonance frequency difference between each pair of peaks is measured. The three different frequency differences come from three different NV directions, and the magnitudes of the three frequency differences are proportional to the magnetic field strength along projections of three symmetry axes in the NV color center, andthe three orientations is sufficient to extract three components of the magnetic field, which is the total field strength in this state. The measured weak magnetic field of the magnetized permalloy is obtained by subtracting the known magnetic field from the total field strength. Furthermore, the detection of the weak magnetic field of the local spin triplet state electronic ground state based onthe diamond NV color center is realized.

Description

Technical field [0001] The invention relates to the field of quantum sensors, in particular to a weak magnetic field detection system and method based on the ground state of a local spin triplet electron of a diamond NV color center. Background technique [0002] Weak magnetic detection, such as the accurate measurement of the geomagnetic field, is of great significance in aerospace, aviation, navigation and long-range precision guidance. At present, super-sensitive magnetometers for measuring weak magnetic fields include superconducting quantum interferometers, proton magnetometers, Hall probe scanning microscopes, magnetic force microscopes, etc., but they need to be performed under specific conditions (such as low temperature and high vacuum, etc.), and cost Higher. [0003] Studies have found that the retina of birds, the pineal gland of salamanders, and the abdomen of bees contain magnetic induction sources. The "trigeminal nerve hypothesis" and the "radical pair mechanism (...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01R33/032G01R33/24G01V3/40
CPCG01R33/032G01R33/24G01V3/40
Inventor 郭浩刘俊唐军张晓明赵锐刘文耀杜芳芳王磊张卫东
Owner ZHONGBEI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap