Microwave Magnetic Field Coupling with Nitrogen-Vacancy Center Ensembles in Diamond with High Homogeneity
Autor: | Ming Ding, Heng Yuan, Wei Quan, Chen Zhang, Ning Zhang, Zheng Tang, Lixia Xu |
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Rok vydání: | 2016 |
Předmět: |
Physics
Rabi cycle Condensed matter physics Diamond 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Magnetic field law.invention Resonator law 0103 physical sciences Homogeneity (physics) engineering 010306 general physics 0210 nano-technology Nitrogen-vacancy center Electron paramagnetic resonance Microwave |
Zdroj: | Applied Magnetic Resonance. 47:589-599 |
ISSN: | 1613-7507 0937-9347 |
Popis: | Electron spin resonance measurements with nitrogen-vacancy (NV) center ensembles in diamond are strongly dependent on a uniform microwave magnetic field. Three different types of microwave resonators are used and are well coupled with the spin ensembles at 2.87 GHz for zero-field splitting of the NV centers. The magnitude and the uniformity of both the horizontal and vertical magnetic fields are extracted and analyzed within a $$1\times 1\times 0.5$$ mm3 volume on a diamond sample surface, and the results indicate that the field homogeneity is up to 200 times better than that of the traditional copper wire microwave delivery model. The horizontal magnetic field magnitude homogeneity is better than 5 % over an area of 1 mm2 on the thin film diamond sample with NV ensembles. The average Rabi oscillation frequency is estimated to be 2.3 MHz per 1 W of microwave input power upon strong coherent coupling between the resonators and the spin ensembles. The effect of the nonuniform microwave magnetic field on the spin signal is also discussed. The approach used here will find widespread application in microwave coupling with spin ensembles in thin films. |
Databáze: | OpenAIRE |
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