原子气室内自旋极化率的空间操控与测量

目前,对原子气室内自旋极化率的空间操控与测量已有不少研究,但是对这类研究缺乏系统的分析、整理和综述。通过对文献的梳理,将现有的操控与测量方法分为三类,即光操控/磁测量方法、磁操控/光测量方法和光操控/光测量方法。分别对这三类方法进行了叙述,尤其是对笔者所在小组提出和研究的光操控/光测量方法进行了详细的介绍。该方法采用时空双重调制技术和正交隔离技术,实现了13.7μm线宽的自旋极化率空间操控与测量。此结果不仅远小于之前毫米量级的空间分辨率,而且突破了无扩散干扰距离的限制。基于上述实验进展,对原子气室内自旋极化率操控与测量的空间分辨率理论极限进行了初步分析。

Spatial Manipulation and Measurement of Spin Polarization in Atomic Vapor Cell

At present, there are many researches on spatial manipulation and measurement of spin polarization in atomic vapor cell, but there is no systematic analysis, arrangement and review of these researches. Through the literature review, the current manipulation and measurement methods in this field and divided into three classes, which are optical manipulation/magnetic measurement, magnetic manipulation/optical measurement and optical manipulation/optical measurement. These three methods are described respectively, especially the optical manipulation/optical measurement proposed and studied by the author’s group. In this method, the temporal-spatial double modulation technology and orthogonal isolation technology are used and the spin polarization spatial 13.7μm linewidth is manipulated and imaged. This result is not only much smaller than the results of the previous two methods, but also smaller than the diffusion cross-talk free distance. Based on the above experiment progress, the theoretical limit of spatial resolution for spin polarization spatial manipulation and measurement in atomic vapor cell is analyzed.