Universität Kassel, Institut für Physik und CINSaT, Heinrich-Plett-Str. 40, 34132 Kassel, Germany.
Faraday Discuss. 2011;153:9-26; discussion 73-91. doi: 10.1039/c1fd00109d.
Exploiting coherence properties of laser light together with quantum mechanical matter interferences in order to steer a chemical reaction into a pre-defined target channel is the basis of coherent control. The increasing availability of laser sources operating on the time scale of molecular dynamics, i.e. the femtosecond regime, and the increasing capabilities of shaping light in terms of amplitude, phase and polarization also on the time scale of molecular dynamics brought the temporal aspect of this field to the fore. Since the last Faraday Discussion (Faraday Discussion 113, Stereochemistry and control in molecular reaction dynamics) devoted to this topic more than a decade ago a tremendous cross-fertilization to neighbouring "quantum technology disciplines" in terms of experimental techniques and theoretical developments has occurred. Examples are NMR, quantum information, ultracold molecules, nonlinear spectroscopy and microscopy and extreme nonlinear optics including attosecond-science. As pointed out by the organizers, this meeting brings us back to chemistry and aims to assess recent progress in our general understanding of coherence and control in chemistry and to define new avenues for the future. To that end we will in the Introductory lecture first shortly review some aspects of coherent control. This will not be fully comprehensive and is mainly meant to give some background to current experimental efforts of our research group in controlling (coherent) electronic excitations with tailored light fields. Examples and perspectives for the latter will be given.
利用激光的相干特性和量子力学物质干涉，将化学反应引导到预定的目标通道，这就是相干控制的基础。随着能够在分子动力学时间尺度上运行的激光源的日益普及，即飞秒范围，以及在分子动力学时间尺度上对光的幅度、相位和偏振进行整形的能力的提高，这个领域的时间方面也变得越来越重要。自十多年前上一次 Faraday 讨论（Faraday Discussion 113，分子反应动力学中的立体化学和控制）专门讨论这个主题以来，在实验技术和理论发展方面，已经与相邻的“量子技术学科”进行了大量的交叉融合。例如 NMR、量子信息、超冷分子、非线性光谱和显微镜以及包括阿秒科学在内的极端非线性光学。正如组织者指出的那样，本次会议将我们带回到化学领域，旨在评估我们对化学中相干和控制的总体理解的最新进展，并为未来确定新的途径。为此，在介绍性演讲中，我们将首先简要回顾一下相干控制的一些方面。这不会是全面的，主要是为了给我们研究小组在使用定制光场控制（相干）电子激发方面的当前实验工作提供一些背景。将给出后者的示例和前景。
