论文标题
在钻石中氮呈合奏中核自旋转变的强大光学读数和表征
Robust optical readout and characterization of nuclear spin transitions in nitrogen-vacancy ensembles in diamond
论文作者
论文摘要
钻石中的核自旋合奏是量子传感应用的有希望的候选者，包括旋转感应。在这里，我们对与钻石氮空位（NV）中心内的14N核自旋相关的光学检测到的核旋转过渡进行表征。我们观察到核旋转依赖性荧光，其对比度与NV电子自旋的14N核rabi振荡的对比度相当。使用Ramsey光谱法，我们分别研究了77.5-420 K和350-675 g范围中核自旋转变的温度和磁场依赖性。发现核四极耦合常数Q随温度t产生D | Q |/dt = -35.0（2）Hz/k时T = 297K。此处报道的温度和磁场依赖性对于量子传感应用非常重要，例如旋转感和量子信息处理中的应用。
Nuclear spin ensembles in diamond are promising candidates for quantum sensing applications, including rotation sensing. Here we perform a characterization of the optically detected nuclear-spin transitions associated with the 14N nuclear spin within diamond nitrogen vacancy (NV) centers. We observe nuclear-spin-dependent fluorescence with the contrast of optically detected 14N nuclear Rabi oscillations comparable to that of the NV electron spin. Using Ramsey spectroscopy, we investigate the temperature and magnetic-field dependence of the nuclear spin transitions in the 77.5-420 K and 350-675 G range, respectively. The nuclear quadrupole coupling constant Q was found to vary with temperature T yielding d|Q|/dT=-35.0(2) Hz/K at T=297 K. The temperature and magnetic field dependencies reported here are important for quantum sensing applications such as rotation sensing and potentially for applications in quantum information processing.
