Orbital and Spin Dynamics of Single Neutrally-Charged Nitrogen-Vacancy Centers in Diamond
S. Baier (Kavli institute of nanoscience Delft, TU Delft - QID/Hanson Lab, TU Delft - QuTech Advanced Research Centre)
C. E. Bradley (TU Delft - QID/Taminiau Lab, TU Delft - QuTech Advanced Research Centre, Kavli institute of nanoscience Delft)
Thomas Middelburg (TU Delft - QuTech Advanced Research Centre, TU Delft - BUS/Spider, Kavli institute of nanoscience Delft)
Viatcheslav V. Dobrovitski (TU Delft - QuTech Advanced Research Centre, TU Delft - QID/Dobrovitski Group, Kavli institute of nanoscience Delft)
Tim Taminiau (TU Delft - QID/Taminiau Lab, Kavli institute of nanoscience Delft, TU Delft - QuTech Advanced Research Centre)
R Hanson (TU Delft - QuTech Advanced Research Centre, TU Delft - QN/Hanson Lab, Kavli institute of nanoscience Delft, TU Delft - QID/Hanson Lab)
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Abstract
The neutral charge state plays an important role in quantum information and sensing applications basedon nitrogen-vacancy centers. However, the orbital and spin dynamics remain unexplored. Here, we useresonant excitation of single centers to directly reveal the fine structure, enabling selective addressing ofspin-orbit states. Through pump-probe experiments, we find the orbital relaxation time (430 ns at 4.7 K)and measure its temperature dependence up to 11.8 K. Finally, we reveal the spin relaxation time (1.5 s) andrealize projective high-fidelity single-shot readout of the spin state (≥98%).
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