芯片级固态核磁共振力/磁传感基础研究

该项目面向高精度力/磁参量传感应用，以金刚石NV色心自旋能量哈密顿量转换模型为理论基础，探索多物理场（微波、磁场、光场）调控作用下NV色心高灵敏力/磁传感作用机理。突破低损耗单晶金刚石波导、高Q值光学微腔和色心高浓度有序可控掺杂结构等自旋增强模式设计的关键基础科学问题，优化色心光学激发、传输与探测结构，实现传感器精度优化。研究高效率NV色心核磁共振荧光激发时序优化与检测信号解耦方法，解决传统NV色心激光共聚焦核磁共振传感检测的低光子收集效率和难以芯片化集成的技术难题，实现NV色心核磁共振传感结构的芯片级集成制造。以原子磁力计、陀螺仪和压力传感器为应用目标，探索一类新型的芯片级固态高精度核磁共振力/磁参量传感方法。

The highly sensitive nuclear magnetic resonance (NMR) force/magnetic field sensing method is proposed in this project. Using Hamilton equation of the spin energy in the diamond nitrogen vacancy (NV) centers, the mechanism of the coupling effect between the spins in the NV centers and the multi-fields applied (laser, microwave and magnetic field) will be researched, which will give the insight into the NMR sensors designed. The low loss diamond optical waveguide, the high-Q diamond optical cavity and the high density NV centers will be designed and fabricated. By optimizing the laser excitation and fluorescence collection structure, the sensitivity of the force/magnetic field sensing will be improved. This project will also study the excitation timing and signal processing ethods. To be different with the traditional confocal fluorescence collection method, this project will dedicated on the research of the chip scale integrated NMR sensors, which integrated the NV centers, diamond waveguide, optical cavity and microwave excitation structures on the same plane chip. The pressure senor, gyroscope and the magnetometer applications will be studied.