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Microwave target location method based on the diamond NV color center
Applied Optics
|September 14, 2023
Summary
We developed a new passive method for locating microwave targets using diamond nitrogen vacancy (NV) color centers. This technique achieves precise microwave source localization with minimal error, offering a novel approach for target detection.
Area of Science:
- Quantum Sensing
- Optoelectronics
- Microwave Engineering
Background:
- Accurate localization of microwave targets is crucial for various applications.
- Existing passive localization methods face limitations in sensitivity and precision.
- Diamond nitrogen vacancy (NV) color centers offer unique quantum properties for sensing.
Purpose of the Study:
- To propose and validate a novel passive method for microwave target source localization.
- To leverage the coherent population oscillation effect in diamond NV centers for microwave detection.
- To achieve high-precision localization of microwave sources at a distance.
Main Methods:
- Utilizing diamond nitrogen vacancy (NV) color centers for microwave detection.
- Employing coherent population oscillation, modulation, and demodulation techniques.
- Applying cubic spline interpolation and minimum mean squared error for source positioning.
Main Results:
- Achieved a minimum detection intensity of 0.59 µW for microwave target sources.
- Successfully localized microwave sources within a 50x100 cm^2 area at a distance of 1 m.
- Obtained a maximum positioning error of 3.5 cm.
Conclusions:
- The proposed method offers a new approach for passive microwave target localization.
- Diamond NV centers demonstrate significant potential for sensitive microwave detection and precise localization.
- This technique advances the field of passive sensing for microwave sources.
