论文标题
通过绑定的激子状态在钻石中的中性硅空置中心中光学检测到的磁共振
Optically detected magnetic resonance in neutral silicon vacancy centers in diamond via bound exciton states
论文作者
论文摘要
钻石中的中性硅空置（SIV0）中心是量子网络的有前途的候选者，因为它们具有出色的光学特性和长期的自旋相干时间。然而，由于对激发态良好的结构和有限的非谐振自旋极化的了解不足，因此这种缺陷中的自旋依赖性荧光是难以捉摸的。在这里，我们报告了在低温温度下对光学检测到的SIV0中心的光学检测到的磁共振和相干控制的实现，这是通过先前未报告的高层激发态通过有效的光学自旋极化来实现的。我们使用群体理论和密度功能理论将这些状态分配为绑定的激子状态。这些结合的激子指出，SIV0以及其他新兴缺陷系统可以实现新的控制方案。
Neutral silicon vacancy (SiV0) centers in diamond are promising candidates for quantum networks because of their excellent optical properties and long spin coherence times. However, spin-dependent fluorescence in such defects has been elusive due to poor understanding of the excited state fine structure and limited off-resonant spin polarization. Here we report the realization of optically detected magnetic resonance and coherent control of SiV0 centers at cryogenic temperatures, enabled by efficient optical spin polarization via previously unreported higher-lying excited states. We assign these states as bound exciton states using group theory and density functional theory. These bound exciton states enable new control schemes for SiV0 as well as other emerging defect systems.
