Wide-field diamond magnetometry with millihertz frequency resolution and nanotesla sensitivity
Wide-field quantum magnetometry using nitrogen-vacancy (NV) center in diamond can be a breakthrough for a nuclear magnetic resonance (NMR) in a small volume, which is important for biological applications. Although the coherence time of the electron spin of the NV center results in a limited frequen...
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| Veröffentlicht in: | AIP advances 2018-12, Vol.8 (12), p.125316-125316-7 |
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| container_end_page | 125316-7 |
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| container_issue | 12 |
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| container_title | AIP advances |
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| creator | Mizuno, Kosuke Nakajima, Makoto Ishiwata, Hitoshi Masuyama, Yuta Iwasaki, Takayuki Hatano, Mutsuko |
| description | Wide-field quantum magnetometry using nitrogen-vacancy (NV) center in diamond can be a breakthrough for a nuclear magnetic resonance (NMR) in a small volume, which is important for biological applications. Although the coherence time of the electron spin of the NV center results in a limited frequency resolution for diamond magnetometry in the range 10–100 kHz, recent studies have shown that a phase-sensitive protocol can circumvent this limit using a confocal setup. We proposed a new measurement protocol, “iQdyne,” which facilitates an improved frequency resolution of wide-field imaging, unencumbered by the coherence limit imposed by the NV center. We demonstrated wide-field magnetometry with a frequency resolution of 238 mHz and a magnetic sensitivity of 65 nT/Hz1/2, which are superior to those obtained using a conventional XY8-based technique, and showed the potential of the iQdyne protocol for the wide-field NMR imaging. |
| doi_str_mv | 10.1063/1.5048265 |
| format | Article |
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Although the coherence time of the electron spin of the NV center results in a limited frequency resolution for diamond magnetometry in the range 10–100 kHz, recent studies have shown that a phase-sensitive protocol can circumvent this limit using a confocal setup. We proposed a new measurement protocol, “iQdyne,” which facilitates an improved frequency resolution of wide-field imaging, unencumbered by the coherence limit imposed by the NV center. 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| subjects | Coherence Diamonds Electron spin Magnetic measurement NMR Nuclear magnetic resonance Sensitivity |
| title | Wide-field diamond magnetometry with millihertz frequency resolution and nanotesla sensitivity |
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