1. School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
2. Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
3. Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Tsinghua University, Beijing 100084, China
4. CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing 100190, China