| Factors influencing entanglement of two excitons in a coupled exciton-photon system |
| |
| 引用本文： | 杨 雄,向少华,宋克慧. Factors influencing entanglement of two excitons in a coupled exciton-photon system[J]. 中国物理 B, 2008, 17(2): 435-439 |
| |
| 作者姓名： | 杨 雄 向少华 宋克慧 |
| |
| 作者单位： | Department of Physics, Hunan Normal University,Changsha 410081, China;Department of Physics and ElectronicInformation Science, Huaihua University, Huaihua 418008, China ;Research Institute of Information Science, HuaihuaUniversity, Huaihua 418008, China;Department of Physics and ElectronicInformation Science, Huaihua University, Huaihua 418008, China ;Research Institute of Information Science, HuaihuaUniversity, Huaihua 418008, China |
| |
| 基金项目： | Project supported by the ScientificResearch Fund of EducationBureau of Hunan Province (Grant No 05C696). |
| |
| 摘 要： | The relation between the excitonic purity and the concurrence in a system of two coupled large semiconduction quantum dots mediated by a single-mode cavity field is investigated by using linear entropy theory. The results show the difference in describing two modes of excitonic entanglement between linear entropy and concurrence. The relation between nonclassical property of cavity field and the entanglement degree of excitons is also discussed. The results show that two modes of exciton can reach maximal entanglement when the cavity exhibits an antibunching effect.
|
| 关 键 词： | 量子点 激子 线性熵 非聚束效应 |
| 收稿时间： | 2007-08-17 |
Factors influencing entanglement of two excitons in a coupled exciton--photon system |
| |
| Yang Xiong,Xiang Shao-Hua and Song Ke-Hui. Factors influencing entanglement of two excitons in a coupled exciton--photon system[J]. Chinese Physics B, 2008, 17(2): 435-439 |
| |
| Authors: | Yang Xiong Xiang Shao-Hua Song Ke-Hui |
| |
| Affiliation: | Department of Physics and ElectronicInformation Science, Huaihua University, Huaihua 418008, China ;Research Institute of Information Science, HuaihuaUniversity, Huaihua 418008, China; Department of Physics, Hunan Normal University,Changsha 410081, China |
| |
| Abstract: | The relation between the excitonic purity and the concurrence in asystem of two coupled large semiconduction quantum dots mediated by asingle-mode cavity field is investigated by using linear entropytheory. The results show the difference in describing two modes ofexcitonic entanglement between linear entropy and concurrence. Therelation between nonclassical property of cavity field and theentanglement degree of excitons is also discussed. The results showthat two modes of exciton can reach maximal entanglement when thecavity exhibits an antibunching effect. |
| |
| Keywords: | quantum dot exciton linearentropy antibunching effect |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
|
点击此处可从《中国物理 B》下载免费的PDF全文 |
|
