| 纠缠态表象在热场动力学中的应用 |
| |
| 引用本文： | 任刚,刘忠义,杜建明,余海军,张文海. 纠缠态表象在热场动力学中的应用[J]. 低温物理学报, 2021, 43(3): 187-192 |
| |
| 作者姓名： | 任刚 刘忠义 杜建明 余海军 张文海 |
| |
| 作者单位： | 淮南师范学院电子工程学院光电信息科学与工程系,淮南202036 |
| |
| 基金项目： | 安徽省教育厅自然科学基金;安徽省省级教研项目;资助的课题 |
| |
| 摘 要： | 大多数量子系统都与外界环境之间存在某种热交换或热纠缠，受量子光学双光子纠缠态表象启发，本文将建立热纠缠态表象．根据Takahashi与Umezawa提出的热场动力学理论，热场混合态可以等效为一个量子纯态．因此，任意量子态在环境温度不为零（T≠0）时，系综期望值可以等效成对量子纯态的平均值．在温度趋向于无穷大时，可以得到热真空态的极限形式．类似于相干态，利用平移算符对热真空态极限形式做平移操作后，即可得到热相干态（也称为热纠缠态）．热纠缠态表象可以将密度算符ρ=|m〉〈n|中的左矢部分转化为与环境有关的ρ=|m〉〈n|，从而可以使讨论量子态在热环境的演化变得方便快捷．
|
| 关 键 词： | 希尔伯特空间 量子主方程 热真空态 平移算符 |
Application of Entangled State Representation in Thermal Field Dynamics |
| |
| REN Gang,LIU Zhongyu,DU Jianming,YU Haijun and ZHANG Wenhai. Application of Entangled State Representation in Thermal Field Dynamics[J]. Chinese Journal of Low Temperature Physics, 2021, 43(3): 187-192 |
| |
| Authors: | REN Gang LIU Zhongyu DU Jianming YU Haijun ZHANG Wenhai |
| |
| Affiliation: | Department of Optoelectronic Information Science and Engineering , School of Electrical and Electronics Engineering , Huainan Normal University Huainan 202036,Department of Optoelectronic Information Science and Engineering , School of Electrical and Electronics Engineering , Huainan Normal University Huainan 202036,Department of Optoelectronic Information Science and Engineering , School of Electrical and Electronics Engineering , Huainan Normal University Huainan 202036,Department of Optoelectronic Information Science and Engineering , School of Electrical and Electronics Engineering , Huainan Normal University Huainan 202036 and Department of Optoelectronic Information Science and Engineering , School of Electrical and Electronics Engineering , Huainan Normal University Huainan 202036 |
| |
| Abstract: | |
| |
| Keywords: | Hilbert space Quantum master equation Thermal vacuum state Displacement operator. |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《低温物理学报》浏览原始摘要信息 |
|
点击此处可从《低温物理学报》下载免费的PDF全文 |
|
