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****该学院早期职业奖资助了一个项目，该项目将通过设计的几何结构探索半导体纳米结构中的量子动力学。这些动态过程最终决定了与光相互作用的电子设备（光电设备）的运行速度和效率的极限。利用新开发的纳米结构提供的机会，人们期望发现纳米结构中集体电子激发和光发射所产生的新现象。利用半导体纳米结构的量子特性还可以在新兴的量子信息科学领域实现新的能力。该项目的教育部分将探索多种方法来整合本科生和研究生水平的研究和教育。非理科专业物理学入门课程的有效教学方法将通过技术教学来实践。将开发研究生课程“超快光学和光谱学”。本课程包括讲座以及演示和科学写作技巧的培训。为了响应国会要求的报告《超越风暴：为美国注入活力和就业，创造更光明的经济未来》，未来和现任高中教师将通过德克萨斯大学奥斯汀分校的 UTeach 项目平台参与教育和研究活动。该奖项由材料研究部和物理部支持。****技术摘要****该教师早期职业奖资助一个项目，该项目将探索具有设计几何形状的半导体纳米结构中的量子动力学。在半导体纳米结构中，结构、电子和光学性质密切相关。光激发后，形成激子（或束缚电子空穴对）。激子动力学最终决定了光电器件的运行速度和效率的极限。一个核心问题是量子动力学如何由物理尺寸、构建块的排列和库仑相互作用的组合决定。为了回答这个问题，该项目将使用综合光谱工具来探索具有设计几何结构的纳米结构中的激子动力学。这项研究的意义重大，因为它将纳米结构中的量子工程推进到了一个新的复杂水平。利用新开发的纳米结构提供的机会，人们期望发现纳米结构中集体电子激发和光子发射所产生的新量子现象。该提案的教育部分将探索多种方法来整合本科生和研究生水平的研究和教育。未来和现任高中教师将通过德克萨斯大学奥斯汀分校的 UTeach 项目平台参与教育和研究活动。该奖项由材料研究部和物理部支持。