Design and reconstruction of quantum states of molecular motion

本项目旨在建立与分子运动特征度（即振动和旋转）相关的波函数的实验重建，并开发按设计创建分子量子态的控制技术。我们取得了以下成绩：(1)构建了新型结构的离子成像装置，并成功应用于单向旋转波包的实时传输；(2)提出了一种基于频率啁啾脉冲非共振受激拉曼激发的相干人口转移新方法，并开发了一种新型纳秒脉冲光源来实现新方法；(3)采用高分辨率电子能谱技术详细考察了苯和氢分子簇的分子间运动。

This project has aimed to establish the experimental reconstruction of wave functions pertinent to the degrees of motion characteristic to molecules, i.e., vibration and rotation, and to develop the control technology for creating molecular quantum states as designed. We have made the following achievements: (1) construction of an ion-imaging setup with new configuration and successful application to real-time trucking of propagation of unidirectionaly rotating wave packets, (2) proposal of a new coherent population transfer method based on non-resonant stimulated Raman excitation with frequency-chirped pulses and development of a novel nanosecond pulsed light source to realize the new method, and (3) detailed examination of intermolecular motion in clusters with benzene and hydrogen molecules by adopting high-resolution electronic spectroscopy.