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RESEARCH PRODUCT
Hyperfine level structure in nitrogen-vacancy centers near the ground-state level anticrossing
Arne WickenbrockDmitry BudkerDmitry BudkerRuvin FerberMarcis AuzinshAndris BerzinsFlorian GahbauerReinis LazdaLaima BusaiteHuijie Zhengsubject
PhysicsQuantum PhysicsSpinsCondensed Matter - Mesoscale and Nanoscale PhysicsDiamondFOS: Physical sciences02 engineering and technologyengineering.material021001 nanoscience & nanotechnologyPolarization (waves)7. Clean energy01 natural sciencesSpectral line3. Good healthVacancy defect0103 physical sciencesMesoscale and Nanoscale Physics (cond-mat.mes-hall)engineeringAtomic physics010306 general physics0210 nano-technologySpectroscopyGround stateQuantum Physics (quant-ph)Hyperfine structuredescription
Energy levels of nitrogen-vacancy centers in diamond were investigated using optically detected magnetic-resonance spectroscopy near the electronic ground-state level anticrossing (GSLAC) at an axial magnetic field around 102.4~mT in diamond samples with a nitrogen concentration of 1~ppm and 200~ppm. By applying radiowaves in the frequency ranges from 0 to 40 MHz and from 5.6 to 5.9 GHz, we observed transitions that involve energy levels mixed by the hyperfine interaction. We developed a theoretical model that describes the level mixing, transition energies, and transition strengths between the ground-state sublevels, including the coupling to the nuclear spin of the NV center\textquotesingle s $^{14}$N and $^{13}$C atoms. The calculations were combined with the experimental results by fitting the ODMR spectral lines based on a theoretical model, which yielded information about the polarization of nuclear spins. This study is important for the optimization of experimental conditions in GSLAC-based applications, e.g., microwave-free magnetometry and microwave-free nuclear-magnetic-resonance probes.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-08-14 |