论文标题
零磁场处的单个氮呈缺陷的高分辨率光谱
High-resolution spectroscopy of a single nitrogen-vacancy defect at zero magnetic field
论文作者
论文摘要
我们报告了一项研究钻石晶体及零磁场及其周围氮气晶体中氮的高分辨率微波光谱的研究。我们观察到超精细转变的特征分裂和过渡不平衡，该转变源于横向有效场的存在下的水平抗横断。我们使用脉冲电子自旋谐振光谱法来测量单氮视网膜中心的零场光谱特征，以清楚地解决此类抗横断性。为了定量分析在有效场的存在下超精细自旋转变的磁共振行为，我们提出了一个理论模型，该模型描述了在任意极化微波磁场的作用下的过渡强度。我们的结果对于优化在零或弱磁场中自旋1系统的极化选择性微波激发的实验条件非常重要。
We report a study of high-resolution microwave spectroscopy of nitrogen-vacancy centers in diamond crystals at and around zero magnetic field. We observe characteristic splitting and transition imbalance of the hyperfine transitions, which originate from level anti-crossings in the presence of a transverse effective field. We use pulsed electron spin resonance spectroscopy to measure the zero-field spectral features of single nitrogen-vacancy centers for clearly resolving such level anti-crossings. To quantitatively analyze the magnetic resonance behavior of the hyperfine spin transitions in the presence of the effective field, we present a theoretical model, which describes the transition strengths under the action of an arbitrarily polarized microwave magnetic field. Our results are of importance for the optimization of the experimental conditions for the polarization-selective microwave excitation of spin-1 systems in zero or weak magnetic fields.
