Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Nanjing University of Information Science and Technology Nanjing 210044 China;
Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Nanjing University of Information Science and Technology Nanjing 210044 ChinaSchool of Computer and Software Nanjing University of Information Science and Technology Nanjing 210044 China;
Network coding; quantum network coding; bell states; butterfly networkmodel; quantum communication; eavesdropping detection;