运动原子的高精度测量

本文研究级联三能级原子通过驻波光腔时的高精度测量.驻波激光场与级联原子的上跃迁耦合,其拉比频率依赖于原子通过驻波场的位置.用一束弱探测激光与原子下跃迁耦合.通过探测原子激发态的分布概率,可以确定原子被局限在一个波长范围的4个不同位置,测量精度达到百分之一个光波波长.

High precision measurement of moving atoms

In this paper, high precision measurement of a three-level cascade atom that moves through a standing wave cavity was studied. The standing wave laser field is applied to the upper transition with the Rabi frequency dependent on the position through which the atom passes. A weak probe laser field is coupled to the lower transition. The atom is localized at four different positions with measurement precision of one percent of one optical wavelength when the population in one of the excited states is detected.