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

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arxiv 1304.4709 v2 pith:7PJK7SPP submitted 2013-04-17 quant-ph cond-mat.mes-hall

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
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S. Koizumi J. Isoya R. Fischer L. P. McGuinness B. Naydenov F. Jelezko
This is my paper
classification quant-ph cond-mat.mes-hall
keywords nuclearresonancesinglespincenterdetectiondoublespins
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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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