CAREER: Quantum Transport in Ultrafast Nanoscale Devices

职业：超快纳米器件中的量子传输

• 批准号: 0547415
• 负责人: Irena Knezevic
• 金额: $ 40万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-04-01 至 2012-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0547415&HistoricalAwards=false
• 关键词: CAREER; Quantum; Transport; Ultrafast; Nanoscale

The objective of this research program is the development and computational implementation of a novel formalism in the electronic transport theory, which will enable an adequate description of the transient regime in nanometer-size semiconductor devices. For devices operating at THz speed, the transient response is governed by the build-up and destruction of many-particle correlations between the carriers in the contacts and those in the active region. This makes the device a theoretically challenging dynamically open many-particle system. Intellectual merit:The approach taken in this research program is to extend a formalism traditionally used in quantum information theory for very small open systems, make a bridge to the powerful formalism of nonequilibrium Greens functions, and then use the modified Greens functions as a new, fully quantum-mechanical kernel for the time-resolved simulation on the nanoscale. In addition, this research program will open a window into exploiting the fast multi-electron phenomena for device applications. The technique will also likely have an impact on other areas of science and technology in which there is interest in open systems (e.g., quantum information) and initial correlations (e.g., plasma physics).Broader impact of this career development plan will be educational, scientific, and technological. Virtual Nanoelectronics Lab (VNL), a web-based educational tool containing applets, course materials, instructional videos, and custom-made software will be developed and used as part of the graduate level courses in solid state electronics and transport at the University of Wisconsin - Madison. Research opportunities for high-school teachers and undergraduates from underrepresented groups will be provided.

这项研究计划的目标是在电子输运理论，这将使在纳米尺寸的半导体器件的瞬态制度的充分描述的一种新的形式主义的发展和计算实现。 对于以太赫兹速度工作的器件，瞬态响应由接触中的载流子和有源区中的载流子之间的多粒子相关性的建立和破坏来控制。这使得该装置成为理论上具有挑战性的动态开放多粒子系统。智力价值：在这个研究计划中采取的方法是扩展传统上用于量子信息理论的非常小的开放系统的形式主义，使非平衡格林函数的强大形式主义的桥梁，然后使用修改后的格林函数作为一个新的，完全量子力学的内核在纳米尺度上的时间分辨模拟。此外，这项研究计划将打开一个窗口，利用快速多电子现象的设备应用。该技术还可能对其他对开放系统感兴趣的科学和技术领域产生影响（例如，量子信息）和初始相关性（例如，这一职业发展计划将在教育、科学和技术方面产生更广泛的影响。 虚拟纳米电子学实验室（VNL），一个基于网络的教育工具，包含小程序，课程材料，教学视频和定制的软件将开发和使用的固态电子学和运输在威斯康星州-麦迪逊大学的研究生课程的一部分。将为来自代表性不足群体的高中教师和本科生提供研究机会。