中文摘要：

采用全量子非微扰散射理论，研究了周期量级微波频率激光脉冲中高激发里德堡态铷原子光电离的不对称现象。发现了光电子角分布的不对称性，这一不对称性由电离过程中不同跃迁通道之间的干涉引起。讨论了光电子角分布的不对称性对载波一包络（Carrier—envelope，CE）相位、脉冲宽度及光电子能量的依赖性，发现光电子角分布的不对称性随CE相位、脉冲宽度及光电子能量的变化有显著变化。这一研究证实了最近的实验观测，为微波频率光学范畴内CE相位的测量及光电子角分布的控制提供了一种有效的方法。

英文摘要：

By using a quantum nonperturbative scattering theory, asymmetry in photoionization of Rydberg states of rubidium atoms in circularly polarized few-cycle microwave frequency laser pulses investigated. Asymmetry in photoelectron angular distributions was found. The asymmetry is caused high was by the quantum coherence of different transition channels. Dependence of the asymmetry on carrier-envelope （CE） phase, pulse duration and photoelectron＇s energy were discussed. It is found that the asymmetry varies with the CE phase, pulse duration, and photoelectron＇s energy dramatically. The result confirms the recent experimental finding. It provides an effective means to measure the CE phase and control the photoelectron angular distributions in microwave frequency optical regime.