CAREER: Quantum Dynamics in Nanostructures by Design

职业：纳米结构中的量子动力学设计

• 批准号: 0747822
• 负责人: Xiaoqin Li
• 金额: $ 53.5万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-03-01 至 2014-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0747822&HistoricalAwards=false
• 关键词: CAREER; Quantum; Dynamics; Nanostructures; Design

****NON-TECHNICAL ABSTRACT****This Faculty Early Career Award funds a project that will probe quantum dynamics in semiconductor nanostructures with designed geometry. These dynamic processes ultimately determine the limits of operational speed and the efficiency of electronic devices that interact with light (optoelectronic devices). Taking the opportunity offered by the newly developed nanostructures, one expects to discover novel phenomena arising from collective electron excitation and light emission in nanostructures. Harnessing quantum properties of semiconductor nanostructures may also enable new capabilities in the emerging field of quantum information science. The education component of this project will explore a wide range of methods to integrate research and education in both undergraduate and graduate levels. Effective pedagogical methods in introductory physics courses for non-science majors will be practiced by teaching with technology. A graduate-level course, "ultrafast optics and spectroscopy", will be developed. This course includes both lectures and training in presentation and scientific writing skills. In response to the congressionally requested report, "Rising above the Gathering Strom: Energizing and Employing America for a Brighter Economic Future", future and current high school teachers will be involved in the education and research activities via the platform of the UTeach program at the University of Texas-Austin. This award is supported by the Division of Materials Research and the Division of Physics.****TECHNICAL ABSTRACT****This Faculty Early Career Award funds a project that will probe quantum dynamics in semiconductor nanostructures with designed geometry. In semiconductor nanostructures, structural, electronic and optical properties are closely related. Following optical excitation, excitons (or bound electron-hole pairs) are formed. Exciton dynamics ultimately determine the limits of operational speed and the efficiency of optoelectronic devices. A central question is how quantum dynamics are determined by a combination of physical dimensions, the arrangement of building blocks, and Coulomb interactions. To answer this question, this project will probe exciton dynamics in nanostructures with designed geometry using comprehensive optical spectroscopy tools. The proposed research is significant in that it advances quantum engineering in nanostructures to a new level of sophistication. Taking the opportunity offered by the newly developed nanostructures, one expects to discover novel quantum phenomena arising from collective electron excitation and photon emission in nanostructures. The education component of this proposal will explore a wide range of methods to integrate research and education in both undergraduate and graduate levels. Future and current high school teachers will be involved in the education and research activities via the platform of the UTeach program at the University of Texas-Austin. This award is supported by the Division of Materials Research and the Division of Physics.

****非技术摘要****这个教师早期职业奖为一个项目提供了一个项目，该项目将在半导体纳米结构中探测具有设计几何形状的量子动力学。这些动态过程最终确定了与光（光电设备）相互作用的操作速度的限制和电子设备的效率。借助新开发的纳米结构提供的机会，人们希望发现纳米结构中集体电子激发和光发射引起的新现象。利用半导体纳米结构的量子特性也可能在量子信息科学的新兴领域中实现新功能。该项目的教育部分将探讨各种方法，以整合本科和研究生级别的研究和教育。通过技术教学，将实践非科学专业的入门物理学课程中有效的教学方法。将开发研究生级课程“超快光学和光谱学”。本课程包括演讲和科学写作技巧的讲座和培训。为了回应国会要求的报告：“超越聚会的基因：充满活力和雇用美国的经济未来”，未来和当前的高中教师将通过德克萨斯大学奥斯汀大学的Uteach计划的平台参与教育和研究活动。该奖项得到了材料研究部和物理部门的支持。在半导体纳米结构中，结构，电子和光学性质密切相关。在光激发后，形成了激励（或绑定的电子孔对）。激子动力学最终确定了操作速度的极限和光电设备的效率。一个核心问题是量子动力学如何取决于物理维度的结合，构建块的排列和库仑相互作用。为了回答这个问题，该项目将使用全面的光谱工具在设计几何形状中探测纳米结构中的激子动力学。拟议的研究非常重要，因为它将纳米结构中的量子工程提高到了新的复杂水平。借助新开发的纳米结构提供的机会，人们希望发现纳米结构中集体电子激发和光子发射引起的新型量子现象。该提案的教育部分将探讨各种方法，以整合本科和研究生级别的研究和教育。未来和当前的高中教师将通过德克萨斯大学奥斯汀大学的UTEACH计划的平台参与教育和研究活动。该奖项得到了材料研究部和物理部门的支持。