Funding for this research was provided by:
National Natural Science Foundation of China (61572086)
National Natural Science Foundation of China (1636106)
National Natural Science Foundation of China (61402058)
Sichuan innovation team of quantum security communication (17TD0009)
Application Foundation Project of Sichuan Province of China (2017JY0168)
National Undergraduate Training Program for Innovation and Entrepreneurship (201710621027)
Article History
Received: 28 October 2017
Accepted: 12 March 2018
First Online: 22 March 2018