Understanding A Few Nanoscale Light-Matter-Spin Interactions by Combining Ultrafast Optical Spectroscopy and Colloidal Quantum Functional Materials

* 技术摘要 * 该奖项支持一项实验研究计划，通过超快光学光谱学来了解预先设计的零维胶体量子结构中新兴的光物质自旋过程。该研究计划将直接涉及研究生培训所需的工具和技术，以解决一些基本问题：控制共振等离子体激子相互作用;实现超快自旋控制和回声胶体量子结构的自旋等离子体和自旋声子相互作用;和一类新的胶体量子磁半导体器件的发展。该项目的完成将促进我们对纳米尺度下光辅助自旋相关现象的基本理解和材料工程。这项工作也很重要，因为零维量子结构代表了可用于基于自旋自由度的量子信息处理的最小维度单元。除了学生培训外，该奖项还将允许将尖端研究活动与本科教育计划，K-12推广，课堂演示和教师培训相结合。非技术摘要 * 该奖项支持实验研究，以了解和控制与纳米尺度电子自旋相关的各种基本相互作用。自旋是电子固有的量子力学性质，可能导致新技术和器件的发展。时间分辨光谱学，可以提供极高的时间分辨率与超短光脉冲将被应用于发射，探测和操纵纳米自旋相关的过程。这将包括应用超短光脉冲来创建半导体自旋与等离子体激元（即金属纳米结构中电子的集体运动）和声子（即固体中原子晶格的集体运动）的耦合，以在非常快的时间尺度上操纵半导体量子结构的自旋，并发现纳米级磁体和半导体自旋之间的新型相互作用。该项目将通过采用多学科实验工具来完成，包括量子结构的化学合成，超快光谱学和纳米器件工程，从而为学生培训，K-12推广和课程开发提供肥沃的土壤。

****Technical Abstract****This award supports an experimental research program to understand emerging light-matter-spin involving processes within pre-designed zero-dimensional colloidal quantum structures by ultrafast optical spectroscopy. This research plan will directly involve graduate students training in tools and techniques needed to address a few fundamental issues: control of resonant plasmon-exciton interactions; realization of ultrafast spin control and echo in colloidal quantum structures by spin-plasmon and spin-phonon interactions; and development of new class of colloidal quantum magneto-semiconductor devices. Accomplishment of this project should advance our fundamental understanding and materials engineering of light assisted spin-dependent phenomena at the nanoscale. This work is additionally important because zero-dimensional quantum structures represent the smallest dimensional units that can be used for quantum information processing based on the spin degree of freedom. In addition to student training, this award will also allow to integrate cutting-edge research activities with undergraduate education program, K-12 outreach, classroom demonstration and teacher training.****Non-Technical Abstract****This award supports experimental research to understand and control various fundamental interactions that are of relevance to the spin of electron at the nanometer scale. Spin is an intrinsic quantum mechanical property of electron that can potentially lead to new technology and device development. Time-resolved spectroscopy that can provide extremely high temporal resolution with ultrashort light pulses will be applied to launch, probe and manipulate nanoscale spin-dependent processes. This will include application of ultrashort light pulse to create coupling of spin in semiconductor with plasmon (that is a collective motion of electrons in metal nanostructures) and phonon (that is atomic lattice collective motion in a solid), to manipulate spin of semiconductor quantum structures in a very fast time scale, and to discover novel interactions between spins of nanoscale magnets and semiconductors. This project will be accomplished by employing multidisciplinary experimental tools, including chemical synthesis of quantum structures, ultrafast optical spectroscopy and nano-device engineering, and thus provide a fertile ground for students' training, K-12 outreach and curriculum development.