Wang Gongling, Li Hongjing, Xiao Tailong, Huang Jingzheng, Zeng Guihua
Opt Express. 2021 Nov 22;29(24):39150-39158. doi: 10.1364/OE.438658.
An adaptive correction algorithm is demonstrated based on weak measurement, which introduces a feedback and an additional interaction to the system and can dynamically adjust the operating point in accordance with the condition of the estimated phase change. Two schemes, fast adaptive correction and slow adaptive correction, are proposed for different conditions of the modulation device. Fast adaptive correction scheme can realize a real-time correction and maintain the high sensitivity. Slow adaptive correction scheme, as a supplement, can correct the distortion of the measured parameter by changing the measuring period. These two schemes are useful for high precision phase estimation with time in modern physics and practical applications, including, but not limited to, timing synchronization, accurate distance measurement, and gravity wave detection. Moreover, we discuss the deviation of the adaptive correction for considering system noise in practical measurement.
基于弱测量展示了一种自适应校正算法，该算法向系统引入了反馈和额外的相互作用，并且可以根据估计的相位变化情况动态调整工作点。针对调制装置的不同情况，提出了快速自适应校正和慢速自适应校正两种方案。快速自适应校正方案可以实现实时校正并保持高灵敏度。慢速自适应校正方案作为一种补充，可以通过改变测量周期来校正测量参数的失真。这两种方案对于现代物理学及实际应用中随时间进行的高精度相位估计很有用，包括但不限于定时同步、精确距离测量和引力波检测。此外，我们还讨论了在实际测量中考虑系统噪声时自适应校正的偏差。
