论文标题
用钻石电气读数无微波传感
Electrical readout microwave-free sensing with diamond
论文作者
论文摘要
虽然在基于自旋的量子技术的背景下已经对氮呈现（NV-）中心进行了广泛的研究，但自旋状态读数通常是光学上执行的，这可能会限制微型化和可扩展性。在这里，我们报告了地面跨屏障特征的光电读数，该特征是测量纳米级电子环境的电子自旋共振光谱以及无微波传感的方法。作为概念的证明，通过系统地将NV中心与目标电子系统共振，我们提取了钻石中P1电子自旋浴的光谱。这样的检测可能会探测光学上无效的缺陷和局部自旋环境的动力学。我们还基于基于地基水平抗体（GSLAC）的光电检测的磁力计，该检测表现出有利的检测效率以及磁灵敏度。这种方法可以提供潜在的解决方案来确定旋转密度和表征当地环境。
While nitrogen-vacancy (NV-) centers have been extensively investigated in the context of spin-based quantum technologies, the spin-state readout is conventionally performed optically, which may limit miniaturization and scalability. Here, we report photoelectric readout of ground-state cross-relaxation features, which serves as a method for measuring electron spin resonance spectra of nanoscale electronic environments and also for microwave-free sensing. As a proof of concept, by systematically tuning NV centers into resonance with the target electronic system, we extracted the spectra for the P1 electronic spin bath in diamond. Such detection may enable probing optically inactive defects and the dynamics of local spin environment. We also demonstrate a magnetometer based on photoelectric detection of the ground-state level anticrossings (GSLAC), which exhibits a favorable detection efficiency as well as magnetic sensitivity. This approach may offer potential solutions for determining spin densities and characterizing local environment.
