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High resolution spectroscopy of single NV defects coupled with nearby 13C nuclear spins in diamond.

A. Dréau, J.-R. Maze, M. Lesik, J.-F. Roch, and V. Jacques, Phys. Rev. B 85, 134107 (2012).

We report a systematic study of the hyperfine interaction between the electron spin of a single nitrogen-vacancy (NV) defect in diamond and nearby 13C nuclear spins, by using pulsed electron-spin resonance spectroscopy. We isolate a set of discrete values of the hyperfine coupling strength ranging from 14 MHz to 400 kHz and corresponding to 13C nuclear spins placed at different lattice sites of the diamond matrix. For each lattice site, the hyperfine interaction is further investigated through nuclear-spin polarization measurements and by studying the magnetic field dependence of the hyperfine splitting. This work provides information that is relevant for the development of nuclear-spin-based quantum register in diamond.

Phys. Rev. B 85, 134107 (2012)

DOI: 10.1103/PhysRevB.85.134107
Open Access: arXiv:1204.2947

Acknowledgements

The authors acknowledge L. Childress, P. Bertet, R. Hanson, and F. Jelezko for fruitful discussions. This work was supported by C'Nano Île-de-France and the Agence Nationale de la Recherche (ANR) through the projects DIAMAG, ADVICE and QINVC. J.R.M. acknowledges support from Conicyt Fondecyt, Grant No.11100265.
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