少电子纳米耦合体系的外界因素效应及其应用研究

项目名称： 少电子纳米耦合体系的外界因素效应及其应用研究

项目编号： No.10874122

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 金属学与金属工艺

项目作者： 刘益民

作者单位： 韶关学院

项目金额： 30万元

中文摘要： 本项目获得了在磁场中量子环的特性，建立能模拟实验工作的量子环理论模型。采用B样条基函数，系统研究磁场、电场、杂质等外界因素对少电子量子环、量子点及其纳米耦合体系的物理性质（如电子关联、电子结构、能谱、角动量、自旋、Aharonov-Bohm （AB）效应、持续电流等）的影响及其应用。利用B样条技术计算量子环基态和激发态能级的量子尺寸效应。阐明了限制势对在磁场中少电子量子点的效应。使用热氧化过程时沿氧化铜纳米针的生长方向添加了不同的电场强度, 显示出电场对氧化铜纳米针生长的影响。在量子信息方面，做了较多的研究：重新审查安全量子暗标拍卖协议；提出了四方方案和三方量子态分拆方案；得到了一种不同于通常的节点级数方法 (NPA )的整体积累方法 （GAA）等

中文关键词： 量子点;量子环; 量子信息;磁场;B样条基

英文摘要： The item obtains characteristics of quantum rings in magnetic fields, and establishes quantum ring theory model that could be simulated in experiment. With B-spline base functions, we investigate by the numbers effect of external factors (e.g. magnetic field, electric field and charged impurity) on physics properties of few-electron quantum ring, quantum dot and their coupling nanosystems(e.g. electron correlations,electron configurations,energy spectra,angle momenta, spin, Aharonov-Bohm (AB) effect, persisting current etc.), and explore its applications. The size-dependent effect of the ground and excited state energy of quantum ring is calculated with B-spline technique. Effects of confinement potential on few-electron quantum dots subjected to an external magnetic field are clarified. Different electric field intensities are added along the growth direction of CuO nanoneedles when using a thermal oxidation process, effect of electric field on CuO nanoneedle growth is shown. In the area of quantum information, more research is done. For example, the secure quantum sealed-bid auction protocol is revisited; a four-party scheme and a tripartite quantum state splitting scheme are proposed; a global accumulation approach (GAA) different from the usual node progression approach (NPA) is found.

英文关键词： quantum dot; quantum ring; quantum information; magnetic field; B-spline base