@misc{welter_fast_2022,
	title = {Fast scanning nitrogen-vacancy magnetometry by spectrum demodulation},
	url = {http://arxiv.org/abs/2205.06579},
	abstract = {We demonstrate a spectrum demodulation technique for greatly speeding up the data acquisition rate in scanning nitrogen-vacancy center magnetometry. Our method relies on a periodic excitation of the electron spin resonance by fast, wide-band frequency sweeps combined with a phase-locked detection of the photo-luminescence signal. The method can be extended by a frequency feedback to realize real-time tracking of the spin resonance. Fast scanning magnetometry is especially useful for samples where the signal dynamic range is large, of order millitesla, like for ferro- or ferrimagnets. We demonstrate our method by mapping stray fields above the model antiferromagnet \${\textbackslash}alpha\$-Fe\$\_2\$O\$\_3\$ (hematite) at pixel rates of up to 100{\textbackslash},Hz and an image resolution exceeding one megapixel.},
	urldate = {2022-07-15},
	publisher = {arXiv},
	author = {Welter, P. and Josteinsson, B. A. and Josephy, S. and Wittmann, A. and Morales, A. and Puebla-Hellmann, G. and Degen, C. L.},
	month = may,
	year = {2022},
	note = {arXiv:2205.06579 [cond-mat, physics:quant-ph]},
	keywords = {Condensed Matter - Materials Science, Condensed Matter - Mesoscale and Nanoscale Physics, Quantum Physics},
}

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