Chunlin Chert received the bachelor of engineering degree in automatic control and the Ph.D. degree in control science and engineering both from University of Science and Technology of China in 2001 and 2006, respectively. Now he is an associate professor in the Department of Control and System Engineering of Nanjing University. His research interests include quantum control, intelligent control and robotics. E-mail: chunlin.chen @ieee.org Zhenquan Qin received the bachelor degree in security engineering and the Ph.D. degree in communication and information system both from University of Science and Technology of China in 2002 and 2007, respectively. Now he is a lecturer in the School of Software of Dalian University of Technology. His research interests include network analysis, network security and quantum communication.E-mail:zhenquan.qin@acm.org