Altering the Course of Quantum Dynamics Phenomena

改变量子动力学现象的进程

• 批准号: 1464569
• 负责人: Herschel Rabitz
• 金额: $ 54.9万
• 依托单位: Princeton University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-06-15 至 2018-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1464569&HistoricalAwards=false
• 关键词: Altering; Course; Quantum; Dynamics; Phenomena

With this award, the Chemical Theory, Models and Computational Methods (CTMC) Program in the Chemistry Division is supporting Professor Hershel Rabitz of Princeton University to conduct theoretical studies on the control of quantum dynamics in molecules. This award is cofunded by two other programs in the Chemistry Division; namley Chemical Structure Dynamics and Mechanisms-A (CSDM A) and Chemical Measurement and Imaging (CMI). Ever since lasers were invented in the 1960's, scientists have speculated that it may someday be possible to use these special light sources to manipulate molecules and even selectively break chemical bonds. This prospect holds out promise of essentially "performing laser surgery" on molecules, whereby one portion of the molecule is altered while simultaneously leaving other areas untouched. The research in the Rabitz laboratory seeks to begin to lay the foundation for this vision to become a practical reality. The effort involves theoretical studies establishing the key principles for the creation of laser designs affecting precise manipulation of molecules. The theoretical principles take into consideration both the nature of laboratory laser resources as well as the structure and other features of molecules and how they interact with laser light. The outcome of this research is expected to provide a more thorough understanding of laser-molecule interactions and the practical attainable molecular goals lying ahead in the coming years using advanced laser light resources. Students trained in the Rabitz laboratory receive a high broad and highly inter-disciplinary education. The discovery of tailored laser pulses capable of achieving specific manipulations of molecules is performed as an optimization process working within the laws of quantum mechanics. Professor Rabitz aims to explore the features of what is called the quantum control landscape, which is the molecular observable property of interest as a function of the laser control field. The structure of these landscapes is essential to understand, as the search for an optimal control field entails a climb of the landscape to the highest attainable chemical product yield. The possible presence of complex hindering features on the landscape could impede such searches. Rabitz and coworkers develop special theoretical tools to reveal the true landscape structure and explore its implications for practical laser control of molecules. Concomitantly, the team will develop theoretical tools to investigate the mechanisms by which laser fields manipulate quantum dynamics phenomena including for chemical bond-breaking. Moreover, the mechanistic studies performed by the Rabitz group aim to lay a foundation for extracting physical models of laser driven dynamics extracted from experimental data.

化学系的化学理论、模型和计算方法(CTMC)项目获得这一奖项，支持普林斯顿大学的Hershel Rabitz教授进行分子中量子动力学控制的理论研究。该奖项由化学部的另外两个项目共同资助；Namley化学结构动力学和机理-A(CSDM A)和化学测量和成像(CMI)。自从激光在20世纪60年代发明以来，科学家们一直在猜测，有一天可能会使用这些特殊的光源来操纵分子，甚至选择性地打破化学键。这一前景带来了对分子进行本质上的“激光手术”的希望，即分子的一部分被改变，同时其他区域保持不变。拉比茨实验室的研究试图开始为这一愿景成为现实奠定基础。这项工作涉及建立影响分子精确操纵的激光设计的关键原则的理论研究。理论原理既考虑了实验室激光资源的性质，也考虑了分子的结构和其他特征，以及它们如何与激光相互作用。这项研究的结果有望提供对激光-分子相互作用的更彻底的了解，以及在未来几年使用先进的激光光源可实现的实际分子目标。在拉比茨实验室接受培训的学生接受高度广泛和高度跨学科的教育。能够实现特定分子操纵的定制激光脉冲的发现是在量子力学定律范围内进行的优化过程。拉比茨教授的目标是探索所谓的量子控制景观的特征，这是作为激光控制场函数的感兴趣的分子可观察属性。了解这些景观的结构是必不可少的，因为寻找最佳控制场需要攀登景观以达到最高的化学产品产量。地貌上可能存在复杂的阻碍因素，可能会阻碍此类搜索。拉比茨和他的同事开发了特殊的理论工具来揭示真实的景观结构，并探索其对实际分子激光控制的影响。与此同时，该团队将开发理论工具来研究激光场操纵量子动力学现象的机制，包括化学键断裂。此外，Rabitz小组进行的机理研究旨在为从实验数据中提取激光驱动动力学的物理模型奠定基础。