Coherent Control and Coherence Spectroscopies in Complex Systems

西北大学的Tamar Seideman得到理论和计算化学项目以及国际科学与工程办公室的支持，与柏林自由大学的莱蒂西亚冈萨雷斯合作进行研究和教育。 这些研究人员将进行先进的电子结构计算与量子动力学模拟和最近开发的耗散环境中的最优控制理论相结合，探索使用相干控制工具来深入了解复杂分子系统的结构和动力学的可能性。 复杂系统包括大的生物分子和耦合到耗散环境的分子。 第二个相关的目标是探索受耗散影响的复杂系统的相干光的可控性。 第三个目标是开发一个现实的模型的光控动力学的一些特定的系统，目前的实验和生物或技术的利益。 这些系统包括（1）光敏色素光感受器发色团，发现在绿色植物和趋化性细菌，目前的实验感兴趣的系统，和（2）过度拥挤的烯烃，表现出空间诱导的手性。 一个长期的目标将是利用的方法和具体的系统细节，以数字设计功能的分子器件的基础上，生物模拟。 国际研究合作的协同性质要求合作伙伴在不同理论组成部分的专业知识密切互动。参与的学生将接受电子结构，反应动力学和光物质相互作用等互补领域的培训，并在合作伙伴国家提供的丰富文化和科学机会内进行。将深入了解一般化学感兴趣的系统，以及潜在的生物化学和生物模拟相关性。

Tamar Seideman of Northwestern University is supported by the Theoretical and Computational Chemistry Program and the Office of International Science and Engineering for research and education in collaboration with Leticia Gonzalez of the Free University of Berlin. These investigators will carry out a combination of advanced electronic structure calculations with quantum dynamics simulations and a recently developed theory of optimal control in dissipative environments, to explore the possibility of using coherent control tools to gain insights into the structure and dynamics of complex molecular systems. The complex systems include large biological molecules and molecules coupled to a dissipative environment. A second, related, goal is to explore the controllability by coherent light of complex systems subject to dissipation. A third goal is to develop a realistic model of the light-controlled dynamics of a number of specific systems of current experimental and either biological or technological interest. These systems include (1) phytochrome photoreceptor chromophore, found in green plants and in chemotropic bacteria, a system of currently experimental interest, and (2) overcrowded alkenes, which exhibit sterically-induced chirality. A long-term objective will be to utilize the methods and specific system details to be developed to numerically design functional molecular devices based on bio-mimicking. The synergistic nature of the international research collaboration requires close interaction of partner expertise in the different theoretical components. The participating students will be trained in complementary fields of electronic structure, reaction dynamics, and light-matter interaction, within the enriching cultural and scientific opportunities provided by the partner country. Insights will be gained into systems of general chemical interest, as well as potential biochemical and bio-mimicking relevance.