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Optical determination and magnetic manipulation of single nitrogen-vacancy color center in diamond nanocrystal

Ngoc Diep Lai, Dingwei Zheng, François Treussart, and Jean-François Roch, Adv. Nat. Sci.: Nanosci. Nanotechnol. 1, 015004 (2010)

The controlled and coherent manipulation of individual quantum systems is a fundamental key for the development of quantum information processing. The nitrogen-vacancy (NV) color center in diamond is a promising system since its photoluminescence is perfectly stable at room temperature and its electron spin can be optically read-out at the individual level. We review here the experiments currently realized in our laboratory, concerning the use of single NV color center as single photon source and the coherent magnetic manipulation of the electron spin associated to a single NV color center. Furthermore, we demonstrate a nanoscopy experiment based on saturation absorption effect, which allows to optically pin-point single NV color center at a sub-λ resolution. This opens a possibility to independently address two or multiple magnetically-coupled single NV color centers, which is a necessary step toward the realization of a diamond-based quantum computer.

actes de la conférence IWNA2009 in Vung Tau, Viet Nam

Open access paper: doi 10.1088/2043-6254/1/1/015014

Acknowledgments
This work is supported by the European Commission through EQUIND (FP6 project number IST-034368) and NEDQIT (ERANET Nano-Sci) projects, by the National Research Agency through PROSPIQ (ANR-06-NANO-041-01) project, and by the RTRA Triangle de la Physique' (B-DIAMANT project).

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