论文标题
钻石中单个中性氮 - 牙中心的轨道和自旋动力学
Orbital and Spin Dynamics of Single Neutrally-Charged Nitrogen-Vacancy Centers in Diamond
论文作者
论文摘要
中性电荷状态在量子信息和基于氮无效中心的传感应用中起重要作用。但是，轨道和旋转动力学仍未开发。在这里，我们使用单个中心的共振激发直接揭示出精细的结构，从而可以选择性地解决自旋轨道状态。通过泵探针实验，我们发现轨道松弛时间（430NS为4.7K），并测量其温度依赖性最高为11.8K。最后，我们揭示了旋转放松时间（1.5s），并实现旋转状态的投射高保真单拍读数（$ \ geq98 \％$）。
The neutral charge state plays an important role in quantum information and sensing applications based on nitrogen-vacancy centers. However, the orbital and spin dynamics remain unexplored. Here, we use resonant excitation of single centers to directly reveal the fine structure, enabling selective addressing of spin-orbit states. Through pump-probe experiments, we find the orbital relaxation time (430ns at 4.7K) and measure its temperature-dependence up to 11.8K. Finally we reveal the spin relaxation time (1.5s), and realize projective high-fidelity single-shot readout of the spin state ($\geq98\%$).
