1. Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
2. Interdisciplinary Centre for Quantum Information and Zhejiang Province Key Laboratory of Quantum Technology and Device, Department of Physics, Zhejiang University, Hangzhou 310027, China.
3. Theoretical Quantum Physics Laboratory, RIKEN Cluster for Pioneering Research, Wako-shi, Saitama 351-0198, Japan.
4. Physics Department, University of Michigan, Ann Arbor, MI 48109-1040, USA.
5. CAS Centre for Excellence in Topological Quantum Computation, School of Physical Sciences, UCAS, Beijing 100190, China.