[1] Zhengzhou Informat Sci & Technol Inst, Zhengzhou 450001, Peoples R China
[2] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Peoples R China
[3] Shanghai Jiao Tong Univ, Dept Elect Engn, State Key Lab Adv Opt Commun Syst & Networks, Shanghai 200240, Peoples R China