Excited-state spectroscopy using single spin manipulation in diamond

TitleExcited-state spectroscopy using single spin manipulation in diamond
Publication TypeJournal Article
Year of Publication2008
AuthorsFuchs GD, Dobrovitski VV, Hanson R, Batra A, Weis CD, Schenkel T, Awschalom DD
Journal TitlePhysical Review Letters
Date PublishedSep
Type of ArticleArticle
ISBN Number0031-9007
Accession NumberISI:000259188700067
Keywordscoherent dynamics, electron, N-V CENTER, NITROGEN-VACANCY CENTER, qubits, RESONANCE

We use single-spin resonant spectroscopy to study the spin structure in the orbital excited state of a diamond nitrogen-vacancy (N-V) center at room temperature. The data show 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 similar to 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 level splitting can significantly differ between N-V 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.

Alternate JournalPhys. Rev. Lett.