Connections of Coherent Information,Quantum Discord,and Entanglement |
| |
Authors: | FU Hui-Juan LI Jun-Gang ZOU Jian SHAO Bin |
| |
Institution: | School of Physics, Beijing Institute of Technology, Beijing 100081, China |
| |
Abstract: | For a pure non-markovian dephasing model we derive analytic expressions of coherent information,quantum discord,and entanglement.We find that for the cases of the initial Werner states,the dynamical behavior of coherent information is similar to that of quantum discord but different from that of entanglement.Coherent information,as well as quantum discord,can reveal the quantum correlations in some mixed-states,in which the entanglement is zero. |
| |
Keywords: | coherent information quantum discord entanglement |
本文献已被 CNKI 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》下载免费的PDF全文 |
|