Electron spin decoherence of single nitrogen-vacancy defects in diamond

By J. Maze, Jacob M. Taylor, Mikhail D. Lukin. 2008

173 citations recorded by the source corpus.

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.

Subfields: Electrical and Electronic Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/d0169e5fccb6ccd3ad2ba1d65da512049e06ced5

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Citations in the corpus

Observation of dipolar spin-exchange interactions with lattice-confined polar molecules (2013, background): “Although exactly treating the many-body dynamics is intractable, at sufficiently small filling a “cluster expansion” that separates N molecules into N/g clusters of g molecules and solves exactly the spin dynamics within these clusters [45, 46] can be quite accurate (we use g up to 10).”
A quantum spin transducer based on nanoelectromechanical resonator arrays (2009, background): “During this time spins interact with their local magnetic environment which leads to a loss of coherence ∼ e−(tg/T2) , whereα ≥ 1 depends on specific properties of the environment and the ga te sequence [42, 43, 44].”
Far-field optical imaging and manipulation of individual spins with nanoscale resolution. (2010, background): “Centre 2 exhibits good coherent dynamics, evidenced by echo revivals exceeding 20 μs, whereas centre 1 shows no echo revival, owing to a nearby 13 C nucleu”