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arXiv · 1304.4709

Detecting and polarizing nuclear spins with double resonance on a single electron spin

P. London·J. Scheuer·J. -M. Cai·I. Schwarz·A. Retzker·M. B. Plenio·M. Katagiri·T. Teraji·S. Koizumi·J. Isoya·R. Fischer·L. P. McGuinness·B. Naydenov·F. Jelezko
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Abstract

We report the detection and polarization of nuclear spins in diamond at room temperature by using a single nitrogen-vacancy (NV) center. We use Hartmann-Hahn double resonance to coherently enhance the signal from a single nuclear spin while decoupling from the noisy spin-bath, which otherwise limits the detection sensitivity. As a proof-of-principle we: (I) observe coherent oscillations between the NV center and a weakly coupled nuclear spin, (II) demonstrate nuclear bath cooling which prolongs the coherence time of the NV sensor by more than a factor of five. Our results provide a route to nanometer scale magnetic resonance imaging, and novel quantum information processing protocols.

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P. London, J. Scheuer, J. -M. Cai, I. Schwarz, A. Retzker, M. B. Plenio, M. Katagiri, T. Teraji, S. Koizumi, J. Isoya, R. Fischer, L. P. McGuinness, B. Naydenov, F. Jelezko. 2013-06-27. Detecting and polarizing nuclear spins with double resonance on a single electron spin. https://doi.org/10.1103/physrevlett.111.067601

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