Journal article

Anticrossing Spin Dynamics of Diamond Nitrogen-Vacancy Centers and All-Optical Low-Frequency Magnetometry

David A Broadway, James DA Wood, Liam T Hall, Alastair Stacey, Matthew Markham, David A Simpson, Jean-Philippe Tetienne, Lloyd CL Hollenberg



We investigate the photoinduced spin dynamics of single nitrogen-vacancy (N-V) centers in diamond near the electronic ground-state level anticrossing (GSLAC), which occurs at an axial magnetic field around 1024 G. Using optically detected magnetic resonance spectroscopy, we first find that the electron-spin transition frequency can be tuned down to 100 kHz for the N14-V center, while, for the N15-V center, the transition strength vanishes for frequencies below about 2 MHz owing to the GSLAC structure. Using optical pulses to prepare and read out the spin state, we observe coherent spin oscillations at 1024 G for the N14-V center which originate from spin mixing induced by residual transverse..

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Awarded by Australian Research Council (ARC) under Centre of Excellence scheme

Awarded by ARC Laureate Fellowship

Funding Acknowledgements

We thank L. McGuinness for the experimental assistance with the diamond samples. This work was supported in part by the Australian Research Council (ARC) under the Centre of Excellence scheme (Project No. CE110001027). L. C. L. H. acknowledges the support of an ARC Laureate Fellowship (Project No. FL130100119). This work was performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF).