论文标题
对映体选择微波三波混合的理性脉冲设计
Rational pulse design for enantiomer-selective microwave three-wave mixing
论文作者
论文摘要
微波三波混合可以使随机定向的手性分子的对映体选择性激发具有不同能量的旋转状态。分子的随机取向反映在旋转频谱的退化性相对于定向量子数$ m $ $ m $的变性，并减少（如果不考虑），则反映了对映异构体 - 选择性。在这里，我们通过分析与共鸣微波驱动器引起的旋转转变相关的频率相关的$ m $依赖性，以最大的对映异构体选择性设计脉冲序列。我们比较了旋转过渡的不同激发方案，并表明在给定的旋转温度下，在给定的旋转温度下最大的对映异构体选择性与圆形极化场的同步三波混合。
Microwave three-wave mixing allows for enantiomer-selective excitation of randomly oriented chiral molecules into rotational states with different energy. The random orientation of molecules is reflected in the degeneracy of the rotational spectrum with respect to the orientational quantum number $M$ and reduces, if not accounted for, enantiomer-selectivity. Here, we show how to design pulse sequences with maximal enantiomer-selectivity from an analysis of the $M$-dependence of the Rabi frequencies associated with rotational transitions induced by resonant microwave drives. We compare different excitations schemes for rotational transitions and show that maximal enantiomer-selectivity at a given rotational temperature is achieved for synchronized three-wave mixing with circularly polarized fields.
