Chunsen Liu1,2, Huawei Chen1, Xiang Hou1, Heng Zhang1, Jun Han1, Yu-Gang Jiang1, Xiaoyang Zeng1, David Wei Zhang1* and Peng Zhou1,2*
1 State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, China.
2 These authors contributed equally: Chunsen Liu, Peng Zhou.