A robust fiber-based quantum thermometer coupled with nitrogen-vacancy centers
arXiv:2004.04349 · doi:10.1063/5.0044824
Abstract
The nitrogen-vacancy center in diamond has been broadly applied in quantum sensing since it is sensitive to different physical quantities. Meanwhile, it is difficult to isolate disturbances from unwanted physical quantities in practical applications. Here, we present a robust fiber-based quantum thermometer which can significantly isolate the magnetic field noise and microwave power shift. With a frequency modulation scheme, we realize the temperature measurement by detecting the variation of the sharp-dip in the zero-field optically detected magnetic resonance spectrum in a high-density nitrogen-vacancy ensemble. Thanks to its simplicity and compatibility in implementation and robustness in the isolation of magnetic and microwave noise, this quantum thermometer is then applied to the surface temperature imaging of an electronic chip with a sensitivity of . It paves the way to high sensitive temperature measurement in ambiguous environments.
10 pages, 6 figures
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- Imaging heat transport in suspended diamond nanostructures with integrated spin defect thermometers