Effect of Quantum Point Contact Measurement on Electron Spin State in Quantum Dots |
| |
| Authors: | ZHU Fei-Yun TU Tao HAO Xiao-Jie GUO Guang-Can GUO Guo-Ping |
| |
| Affiliation: | Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026 |
| |
| Abstract: | We study the time evolution of two electron spin states in a double quantum-dot system, which includes a nearby quantum point contact (QPC) as a measurement device. We find that the QPC measurement induced decoherence is in the micrsecond timescale. We also find that the enhanced QPC measurement will trap the system in its initial spin states, which is consistent with the quantum Zeno effect. |
| |
| Keywords: | 03 67 Lx 03 65 Yz 03 65 Ta |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《中国物理快报》浏览原始摘要信息 |
|
点击此处可从《中国物理快报》下载免费的PDF全文 |
