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Quantum Diamond Microscope for Dynamic Imaging of Magnetic Fields by Tang, Jiashen; Yin, Zechuan; Hart, Connor A.; Blanchard, John W.; Oon, Jner Tzern; Bhalerao, Smriti; Schloss, Jennifer M.; Turner, Matthew J.; Walsworth, Ronald L. is a scholarly article available to read on EtoBox.

What is Quantum Diamond Microscope for Dynamic Imaging of Magnetic Fields about?

Wide-field imaging of magnetic signals using ensembles of nitrogen-vacancy (NV) centers in diamond has garnered increasing interest due to its combination of micron-scale resolution, millimeter-scale field of view, and compatibility with diverse samples from across the physical and life sciences. Recently, wide-field NV magnetic imaging based on the Ramsey protocol has achieved uniform and enhanced sensitivity compared to conventional measurements. Here, we integrate the Ramsey-based protocol with spin-bath driving to extend the NV spin dephasing time and improve magnetic sensitivity. We also employ a high-speed camera to enable dynamic wide-field magnetic imaging. We benchmark the utility of this quantum diamond microscope (QDM) by imaging magnetic fields produced from a fabricated wire phantom. Over a $270\times270 \hspace{0.08333em} \mu\mathrm{m}$$^2$ field of view, a median per-pixel magnetic sensitivity of $4.1(1)\hspace{0.08333em}\mathrm{nT}$$/\sqrt{\mathrm{Hz}}$ is realized with a spatial resolution $\lesssim\hspace{0.08333em}10\hspace{0.08333em}\mu\mathrm{m}$ and sub-millisecond temporal resolution. Importantly, the spatial magnetic noise floor can be reduced to the picotes

Author

Tang, Jiashen; Yin, Zechuan; Hart, Connor A.; Blanchard, John W.; Oon, Jner Tzern; Bhalerao, Smriti; Schloss, Jennifer M.; Turner, Matthew J.; Walsworth, Ronald L.

Published

2023

Language

EN