Excited-state spectroscopy using single-spin manipulation in diamond

Details Excited-state spectroscopy using single-spin manipulation in diamond Excited-state spectroscopy using single-spin manipulation in diamond

2008-06-11

arxiv.org/abs/0806.1939v1

Physics

Quantum Physics

15 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.101.117601

We use single-spin resonant spectroscopy to study the spin structure in the orbital excited-state of a diamond nitrogen-vacancy center at room temperature. We find that the excited state spin levels have a zero-field splitting that is approximately half of the value of the ground state levels, a g-factor similar to the ground state value, and a hyperfine splitting ~20x larger than in the ground state. In addition, the width of the resonances reflects the electronic lifetime in the excited state. We also show that the spin-splitting can significantly differ between NV centers, likely due to the effects of local strain, which provides a pathway to control over the spin Hamiltonian and may be useful for quantum information processing.

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