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arXiv · 1608.05224

Extinction of Light and Coherent Scattering by a Single Nitrogen-Vacancy Center in Diamond

Thai Hien Tran·Jörg Wrachtrup·Ilja Gerhardt
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Abstract

Coherently scattered light from a single quantum system promises to get a valuable quantum resource. In this letter an external laser field is efficiently coupled to a single nitrogen vacancy (NV-)center in diamond. By this it is possible to detect a direct extinction signal and estimate the NV's extinction cross-section. The exact amount of coherent and incoherent photons is determined against the saturation parameter, and reveals the optimal point of generating coherently scattered photons and an optimal point of excitation. A theoretical model of spectral diffusion allows to explain the deviation to an atom in free-space. The introduced experimental techniques are used to determine the properties of the tight focusing in an interference experiment, and allow for a direct determination of the Gouy-phase in a strongly focused beam.

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Thai Hien Tran, Jörg Wrachtrup, Ilja Gerhardt. 2016-08-18. Extinction of Light and Coherent Scattering by a Single Nitrogen-Vacancy Center in Diamond. https://doi.org/10.1103/physreva.95.053831

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