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The lifetime spectroscopy of slow positron accelerated with linear accelerator and pulse punch system was first used to analyze the vacancies in the thin surface layer of silicon heavily doped with arsenic. The results demonstrated that no mono-vacancy was detected to support the arsenic-vacancy complex models for explaining the electrical deactivation mechanism of arsenic-heavily-doped silicon. 相似文献
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量子力学可视化的计算机辅助表述—量子云、壳层结构以及共价健的三维重构 总被引:2,自引:0,他引:2
文章简要说明如何应用计算机三维重构技术,以MATLAB为开发工具研制成了一个最子力学可视化的教学软件包中的一个重要组成部分-氢原子和多电子系统电子云、壳层结构和分子共价键的三维重构,软件中所有形象表述都以量子力学的严格理论计算为基础,并且注意到量子力学不同寻常的基本概念的贯彻,它们涉及到了单电子和多电子系统波函数的计算及其近似处理、密度矩阵的概念、斯莱特(Slater)行列式等比较深入的数学物理问题。 相似文献
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NMR analogue of the generalized Grover‘s algorithm of multiple marked states and its application 总被引:3,自引:0,他引:3 下载免费PDF全文
The generalized Grover's algorithm for the case in which there are multiple marked states is demonstrated on a nuclear magnetic resonance (NMR) quantum computer. The Walsh-Hadamard transform and the phase inversion are all replaced. NMR analogues of Einstein-Podolsky-Rosen states (pseudo-EPR states) are synthesized using the above algorithm. 相似文献
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NMR analogue of the generalized Grover's algorithm of multiple marked states and its application 下载免费PDF全文
The generalized Grover‘s algorithm for the case in which there are multiple marked states is demonstrated on a nuclear magnetic resonance (NMR) quantum computer. The Walsh-Hadamard transform and the phase inversion are all replaced. NMR analogues of Einstein-Podolsky-Rosen states (pseudo-EPR states) are synthesized using the above algorithm. 相似文献
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本文着重对B、P、As在Si中扩散的特殊理论问题和实验问题的发展过程和最近动态做了较系统的和概要的评述。 相似文献
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《量子力学可视化的计算机辅助表述》软件(ViQM)是我国自行开发的第一个量子力学教学软件.现阶段该软件主要涉及量子力学的两类基本问题:(1)应用计算机的三维重构技术表现量子力学的定态问题,包括氢原子基态和各种激发态核外电子云的三维重构、多电子原子的壳层结构及分子共价键的三维表述;(2)应用蒙特卡罗随机模拟与动画相结合技术描述散射相关问题,包括单电子衍射、一维隧道贯穿和一般散射问题.封面上表示的三维重构技术在定态问题上的应用.上四幅图分别表示氢原子激发态n=4,l=2,m=0的电子云表观图、断层切片图、等值面外壳图和三维断面图,下两张图分别表示氢分子的电子云和共价键的三维视图.在所涉及到的问题上,比起目前国际上广为流传的《图解量子力学》的IQ软件,技术上高一个层次,形象更加逼真. 相似文献
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With the two forms of the quantum entanglement control, the quantum entanglement swapping and preservation are demonstrated in a three-qubit nuclear magnetic resonance quantum computer. The pseudopure state is prepared to represent the quantum entangled states through macroscopic signals. Entanglement swapping is directly realized by a swap operation. By controlling the interactions between the system and its environment,we can preserve an initial entangled state for a longer time. The experimental results are in agreement with the experiment. 相似文献
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