基于蒙特卡罗方法的冷原子干涉仪物理仿真

由于现有的噪声分析方法无法很好地评估在复杂环境下冷原子干涉仪的输出特性，本文提出了一种新的冷原子干涉仪仿真方法，可以模拟大动态条件下各项噪声及其之间的耦合对冷原子干涉仪的影响。利用单粒子波包演化的处理方式对冷原子干涉仪进行全过程物理建模，并采取蒙特卡罗方法对大量确定初态的原子进行全过程统计，最终得到冷原子干涉仪在多种噪声同时存在的情况下的响应。该方法主要优势体现在能够对噪声耦合情形进行高精度仿真，并且可以根据实际数据对干涉仪输出进行实时处理，以提升冷原子干涉仪的性能指标。

Monte-Carlo Based Numerical Simulation of the Cold Atom Interferometry

Since the existing noise analysis methods can hardly evaluate the output characteristics of the cold atom interferometer in a complex environment, a new cold atom interferometer simulation method is proposed in this paper, which could simulate the influence of various noises coupling on the cold atom interferometer under large vibration and rotation. By using single-particle wave-packet evolution method to evaluate the whole process of cold atom interferometry, and simulate an ensemble of independent atom with Monte-Carlo method. Eventually, the statistical results of an atomic ensemble after the interference under multiple noise situation are obtained. The main superiority of this simulation comparing to the typical sensitivity function method is that it could perform high-precision simulation while the noise coupling effect is significant. Moreover, it provides a new method to perform the real-time compensation to the output of the interferometry which could improve the overall performance of the whole system.