Initialization and Readout of Nuclear Spins via negatively charged Silicon-Vacancy Center in Diamond

Understand

In this work, we demonstrate initialization and readout of nuclear spins via a negatively charged silicon-vacancy (SiV) electron spin qubit.

• Under Hartmann-Hahn conditions the electron spin polarization is coherently transferred to the nuclear spin.
• The readout of the nuclear polarization is observed via the fluorescence of the SiV.
• We also show that the coherence time of the nuclear spin (6 ms) is limited by the electron spin-lattice relaxation due to the hyperfine coupling to the electron spin.