Magnetic field sensitivity and decoherence spectroscopy of an ensemble of narrow-linewidth nitrogen-vacancy centers close to a diamond surface
| Autor: | Sasaki, Kento, Kleinsasser, Ed E., Zhu, Zhouyang, Li, Wen-Di, Watanabe, Hideyuki, Fu, Kai-Mei C., Itoh, Kohei M., Abe, Eisuke |
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| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Appl. Phys. Lett. 110, 192407 (2017) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1063/1.4983350 |
| Popis: | We perform pulsed optically detected electron spin resonance to measure the DC magnetic field sensitivity and electronic spin coherence time T_2 of an ensemble of near-surface, high-density nitrogen-vacancy (NV) centers engineered to have a narrow magnetic resonance linewidth. Combining pulsed spectroscopy with dynamic nuclear polarization, we obtain the photon-shot-noise-limited DC magnetic sensitivity of 35 nT Hz^{-0.5}. We find that T_2 is controlled by instantaneous diffusion, enabling decoherence spectroscopy on residual nitrogen impurity spins in the diamond lattice and a quantitative determination of their density. The demonstrated high DC magnetic sensitivity and decoherence spectroscopy are expected to broaden the application range for two-dimensional magnetic imaging. Comment: 5 pages, 4 figures |
| Databáze: | arXiv |
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