Electron spin decoherence of single Nitrogen-Vacancy defects in diamond

Details Electron spin decoherence of single Nitrogen-Vacancy defects in diamond Electron spin decoherence of single Nitrogen-Vacancy defects in diamond

2008-05-02

arxiv.org/abs/0805.0327v1

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1103/PhysRevB.78.094303

We present a theoretical analysis of the electron spin decoherence in single Nitrogen-Vacancy defects in ultra-pure diamond. The electron spin decoherence is due to the interactions with Carbon-13 nuclear spins in the diamond lattice. Our approach takes advantage of the low concentration (1.1%) of Carbon-13 and their random distribution in the diamond lattice by an algorithmic aggregation of spins into small, strongly interacting groups. By making use of this \emph{disjoint cluster} approach, we demonstrate a possibility of non-trival dynamics of the electron spin that can not be described by a single time constant. This dependance is caused by a strong coupling between the electron and few nuclei and results, in particular, in a substantial echo signal even at microsecond time scales. Our results are in good agreement with recent experimental observations.

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