基于单个174Yb+离子结晶体高分辨空间热分布的稳定性优化OA北大核心

Trapped ion systems play a vital role in fields such as quantum information processing and optical frequency standards.Low-energy,highly stable trapped ions enable precise quantum manipulation and significantly reduce Doppler effect.However,ion heating presents a major challenge to maintaining such stability.In our work,a high-magnification optical imaging system is employed to achieve micron-level resolution imaging of a single 174Yb+ion crystal.By analyzing the ion's spatial thermal distribution and applying an adaptive Gaussian filtering technique,the root mean square linewidth is accurately extracted,enabling accurate temperature measurements.Experimentally,the temperature(or energy)of a single 174Yb+ion is progressively reduced from 1 400 mK to 260 mK.Various heating mechanisms become increasingly apparent as the ion temperature decreases.These findings provide a foundation for further optimization of ion stability.This study not only presents a practical approach for evaluating and reducing the temperature of trapped ions,thereby improving their stability,but also paves the way for exploring other ion heating effects.