New theoretical methods for Full Counting Statistics and noise spectra in nano-scale electronic systems with long memories

长记忆纳米级电子系统中全计数统计和噪声谱的新理论方法

• 批准号: 37945977
• 负责人: Professor Dr. Tobias Brandes (†)
• 金额: --
• 依托单位: Institut für Theoretische Physik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2007
• 资助国家: 德国
• 起止时间: 2006-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/37945977?language=en
• 关键词: New; theoretical; methods; Full; Counting

With technology advancing towards the nanoscale level, the understanding of dynamical properties of small conductors becomes progressively important. The understanding and the control of quantum properties in nanoscale systems is one of the major keys for the design of new electronic devices, for example in nanoelectronics, nanophotonics, and quantum communication. Dynamical fluctuations of the electric current around its average - full counting statistics (FCS) and noise spectra - have been recognized as a potential tool for fully assessing quantum mechanical properties of electronic systems. There are, however, major open and unsolved issues which we plan to attack within this project: 1. Fundamental questions concerning the very definition of FCS in quantum systems and its relation to the quantum measurement. 2. New theoretical methods for calculating FCS and noise spectra for strongly interacting, dissipative systems with long memory times. 3. The interpretation of experimental FCS data within the framework of theories presently available and/or to be developed here.

随着技术向纳米级发展，对小导体动力学性质的理解变得越来越重要。理解和控制纳米尺度系统中的量子特性是设计新电子器件的主要关键之一，例如在纳米电子学，纳米光子学和量子通信中。电流围绕其平均值的动态波动-全计数统计（FCS）和噪声谱-已被认为是全面评估电子系统量子力学性质的潜在工具。然而，我们计划在这个项目中解决一些主要的开放和未解决的问题：1。关于量子系统中FCS定义及其与量子测量关系的基本问题。2.计算强相互作用、长记忆时间耗散系统的FCS和噪声谱的新理论方法。3.在现有理论框架内和/或在这里开发的实验FCS数据的解释。