Quantum diamond microscopy with optimized magnetic field sensitivity and sub-ms temporal resolution
| Autor: | Sangwon Oh, Seong-Joo Lee, Jeong Hyun Shim, Nam Woong Song, Truong Thi Hien |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Journal of Applied Physics. 133 |
| ISSN: | 1089-7550 0021-8979 |
| DOI: | 10.1063/5.0142448 |
| Popis: | Quantum diamond magnetometers using lock-in detection have successfully detected weak bio-magnetic fields from neurons, a live mammalian muscle, and a live mouse heart. This opens up the possibility of quantum diamond magnetometers visualizing microscopic distributions of the bio-magnetic fields. Here, we demonstrate a lock-in-based wide-field quantum diamond microscopy, achieving a mean volume-normalized per pixel sensitivity of 43.9 $\mathrm{nTμm^{1.5}/Hz^{0.5}}$. We optimize the sensitivity by implementing a double resonance with hyperfine driving and magnetic field alignment along the $$ orientation of the diamond. Additionally, we show that sub-ms temporal resolution ($\sim$ 0.4 ms) can be achieved while keeping the per-pixel sensitivity at a few tens of nanotesla per second using quantum diamond microscopy. This lock-in-based diamond quantum microscopy could be a step forward in mapping functional activity in neuronal networks in micrometer spatial resolution. |
| Databáze: | OpenAIRE |
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