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1、论文(设计)题目(黑体三号加粗居中)(空一行)作者专业年级姓名(宋体五号,作者专业年级、姓名之间空两个字符且专业写全称年级为2004 级)(空一行)摘要(黑体四号加粗):中文摘要(仿宋小四号)(空一行) 关键词(黑体四号加粗):中文关键词(仿宋小四号,关键词之间用分号隔开)(空一行)论文(设计)英文题目(Times New Roman三号加粗居中)(空一行)英文作者姓名,年级,专业(Times New Roman五号之间用逗号隔开)(空一行)Abstract(Times New Roman 四号加粗):英文摘要(Times New Roman 小四号)(空一行)Key Words(Times
2、New Roman四号加粗):英文关键词(Times New Roman小四号关键词 之间用分号隔开)(空一行)正文:(论文中的各章标题: 4号黑体;论文中的节、条、款各级标题及正文文字:4号仿 宋体;页码:5号仿宋体;数字和字母:Times New Roman体四号)(空一行)参考文献: (黑体四号加粗)1(中文仿宋小四号,数字和字母:Times New Roman体小四号)(参考文献的序号左顶格,并用数字加方括号表示,如1,2,3,应与正文中的指 示序号和格式一致。每一参考文献条目的最后均以“ ”结束。) 前置部分:封面中文用黑体三号加粗, 封面英文用 Times New Roman 三号
3、加粗;表格填写用 5 号仿宋体.外文字母的正、斜体用法: 物理量符号、物理常量、变量符号用斜体,计量单位等符号均用正体。(其他有关论文页面设置、名词术语,数字,表格,图,物理量名称、符号与计量单位、公 式、注释以及参考文献的详细说明请看附件8:毕业论文撰写规范)附 1:各专业英文翻译物理学Physics电子信息科学与技术Electron Information Science and Technology通信工程Communication Engineering附 2:正文例两个反向双模压缩态的迭加态的压缩和纠缠特性研究 物理学专业 2004 级文坤杰 摘要:量子压缩和量子纠缠是量子系统所特有
4、的两类非经典特性。量子压缩不仅可以存在于 单模(或单粒子)系统,也可以存在于多模(或多粒子)系统。量子纠缠则只可能存在于两 模(或两粒子)及多模(或多粒子)量子系统。本文研究的重点是两个反相双模压缩态的迭 加态的压缩和纠缠特性。第二章介绍了量子压缩的基本理论,简述了量子压缩的定义和双模 压缩算符、双模压缩真空态。第三章介绍了量子纠缠的基本理论,简述了量子纠缠的定义及 度量方式。第四章和第五章分别研究了两个反相双模压缩态的迭加态的双模压缩和纠缠特性, 计算了所研究的态的双模压缩和冯诺纽曼熵。我们发现,此类迭加态的压缩性质与双模压 缩真空态的模、相位、及迭加因子等众多因素密切相关,而态的纠缠度却与
5、相位因子无关; 迭加因子对态压缩和纠缠的影响都是周期性的;在考虑态的压缩和纠缠时,双模压缩真空态 的模也是需要认真予以考虑的一个重要因素。第六章对利用双模压缩真空态在实验上制备高 纠缠度的物理体系进行了初步的探讨, 并指出了实验制备上需要予以注意的一些重要因素。关键词:量子压缩;量子纠缠;双模压缩真空态;迭加态冯诺纽曼熵Squeezing and Entanglement Properties of Superposition of Anti-Phase Two-Mode Squeezed StatesWen Kunjie , Grade 2004,PhysicsAbstract: Quant
6、um squeezing and entanglement are two kinds of typical non-classical effects for quantum systems. Both single-mode (or single-partite) and multi-mode (or multi-partite) quantum systems may exhibit squeezing. However, quantum entanglement can exists for only two-mode (or two-partite) and multi-mode (
7、or multi-partite) quantum systems. This thesis focuses on the squeezing and entanglement properties of superposition of anti-phase two-mode squeezed states. In chapter 2 we introduce the basic theory of quantum squeezing and briefly describe the definition of two-mode squeezing, two-mode squeezed op
8、erator and two-mode squeezed vacuum state. In chapter 3 we introduce the basic theory of quantum entanglement and simply describe the definition of quantum entanglement and measurement of the degree of quantum entanglement. In chapter 4 and chapter 5, we study the two-mode squeezing and entanglement
9、 properties of the superposition of anti-phase two-mode squeezed states, and calculate the two-mode squeezed properties and von Neumann entropy of the state. We find that the squeezing property of this kind of superposition is intimately related with many factors such as the mode, the phase of two-m
10、ode squeezing vacuum state and the superposition factors, but the entanglement of the state has nothing to do with the phase of two-mode squeezing vacuum state. The influences of the superposition factors on the state are both periodic. In chapter 6, we have an initial discussion on making a high en
11、tangled physics system in experiment by using two-mode squeezing vacuum state, and point out several important factors to which we have to pay more attention in experiment.Key words: quantum squeezing; quantum entanglement; two-mode squeezed vacuum state; superposed states; von Neumann entropy 引言 量子
12、压缩和量子纠缠是量子力学中的两种重要的非经典效应,弄清楚这两种非经典效应的物 理本质及关系 参考文献1彭堃墀等,双模光场压缩态的实验研究J,物理学报,1993, 42 (7): 1079-1080.学科分类号本科毕业设计题目(中文)(黑体3 号加粗居中)(英文) (Times New Roman 3 号加粗居中) 姓名(黑体3 号加粗居中)学号(黑体3 号加粗居中)院(系)(黑体 3 号加粗居中) (不写系)专业、年级(黑体3 号加粗居中)指导教师 (黑体3 号加粗居中)(不写职称) 二 0 一三年五月学科分类号本科毕业论文题目(中文)(黑体3 号加粗居中)(英文) (Times New Roman 3 号加粗居中)姓名学号 院(系) 专业、年级(黑体3 号加粗居中)(黑体3 号加粗居中)(黑体 3 号加粗居中) (不写系)(黑体3 号加粗居中)指导教师 (黑体3 号加粗居中)(不写职称)