Dynamic nuclear polarization in diamond

Abstract

We study the dynamic nuclear polarization of nitrogen-vacancy (NV) centers in diamond through optical pumping. The polarization is enhanced due to the hyperfine interaction of nuclear spins as applied magnetic fields vary. This is a result of the averaging of excited states due to fast-phonon transitions in the excited states. The effect of dephasing, in the presence of a vibronic band, is shown to have little effect during the dynamic polarization.

Keywords

• NV centers
• dynamic polarization
• long-life coherence
• dephasing
• fast-phonon transitions
• 76.30.Mi