标题： 纳米尺度氮空位中心电子核双共振的四阶功率降低 显示英文标题

标题： Four-order power reduction in nanoscale electron-nuclear double resonance with a nitrogen-vacancy center in diamond

摘要： 使用单个氮空位（NV）中心检测核自旋在纳米尺度科学和工程中具有重要意义，但通常会受到用于自旋操控的微波场的加热效应的影响，尤其是在高磁场下。 在这里，我们实现了一种能量高效的纳米尺度核自旋检测，采用相位调制电子-核双共振方案。 微波场可以降低到以前要求的1/250，相应的功率降低了四个数量级。 同时，微波引起的光谱线宽展宽显著被消除，在1840 Gs的磁场下，我们实现了分辨率达到2.1 kHz的核自旋光谱。 通过升级实验控制精度，光谱分辨率可以进一步提高。 该方案也可用于感测微波场，并有望在未来扩展到广泛的应用领域。 显示英文摘要

摘要： Detecting nuclear spins using single Nitrogen-Vacancy (NV) centers is of particular importance in nano-scale science and engineering, but often suffers from the heating effect of microwave fields for spin manipulation, especially under high magnetic fields. Here, we realize an energy-efficient nano-scale nuclear-spin detection using a phase-modulation electron-nuclear double resonance scheme. The microwave field can be reduced to 1/250 of previous requirements and the corresponding power is over four orders lower. Meanwhile, the microwave-induced broadening to the line-width of the spectroscopy is significantly canceled and we achieve a nuclear-spin spectrum with a resolution down to 2.1 kHz under a magnetic field at 1840 Gs. The spectral resolution can be further improved by upgrading the experimental control precision. This scheme can also be used in sensing microwave fields and extended to a wide range of applications in the future.