Theory of Spin-Conserving Excitation of the $N-V^-$ Center in Diamond

Details Theory of Spin-Conserving Excitation of the $N-V^-$ Center in Diamond Theory of Spin-Conserving Excitation of the $N-V^-$ Center in Diamond

2009-03-24

arxiv.org/abs/0903.4078v1

Physics

Condensed Matter

Materials Science

4 pages, 2 figures

Scientific paper

The negatively charged nitrogen-vacancy defect ($N-V^-$ center) in diamond is an important atomic-scale structure that can be used as a qubit in quantum computing and as a marker in biomedical applications. Its usefulness relies on the ability to optically excite electrons between well-defined gap states, which requires clear and detailed understanding of the relevant states and excitation processes. Here we show that by using hybrid density-functional-theory calculations in a large supercell we can reproduce the zero-phonon line and the Stokes and anti-Stokes shifts, yielding a complete picture of the spin-conserving excitation of this defect.

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