Entanglement Fidelity as a Measure of Preservation of Entanglement in Local Noisy Process |
| |
| Authors: | XIANG Yang and XIONG Shi-Jie |
| |
| Affiliation: | 1.School of Physics and Electronics, Henan University, Kaifeng 475004,;China;2.National Laboratory of Solid State Microstructures and Department of;Physics, Nanjing University, Nanjing 210093, China |
| |
| Abstract: | A new formula of entanglement fidelity has been introduced, which can serve as a measure of the preservation of entanglement between two initially entangled subsystems exposed to local noisy environments. For a simple model we derive analytic expressions of concurrence and entanglement fidelity and draw the relationship between them. We find that such entanglement fidelity exhibits the behavior similar to that of the concurrence in quantum evolutions. |
| |
| Keywords: | entanglement fidelity concurrence |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《理论物理通讯》浏览原始摘要信息 |
|
点击此处可从《理论物理通讯》下载全文 |
|
