1. Innovation Laboratory of Terahertz Biophysics, National Innovation Institute of Defense Technology, Beijing 100071, China
2. School of Life Science and Technology and Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China
3. Department of Engineering Physics, Tsinghua University, Beijing 100084, China
4. School of Physics, Peking University, Beijing 100081, China