Polarization and readout of coupled single spins in diamond

R. Hanson*, F. M. Mendoza, R. J. Epstein, D. D. Awschalom

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    204 Citations (Scopus)


    We study the coupling of a single nitrogen-vacancy center in diamond to a nearby single nitrogen defect at room temperature. The magnetic dipolar coupling leads to a splitting in the electron spin resonance frequency of the nitrogen-vacancy center, allowing readout of the state of a single nitrogen electron spin. At magnetic fields where the spin splitting of the two centers is the same, we observe a strong polarization of the nitrogen electron spin. The amount of polarization can be controlled by the optical excitation power. We combine the polarization and the readout in time-resolved pump-probe measurements to determine the spin relaxation time of a single nitrogen electron spin. Finally, we discuss indications for hyperfine-induced polarization of the nitrogen nuclear spin.

    Original languageEnglish
    Article number087601
    JournalPhysical Review Letters
    Issue number8
    Publication statusPublished - 2006


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