Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education) School of Physics and Astronomy Shanghai Jiao Tong University Shanghai 200240 China;
Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education) School of Physics and Astronomy Shanghai Jiao Tong University Shanghai 200240 China;
Tsung-Dao Lee Institute Shanghai Jiao Tong University Shanghai 200240 China;
CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of Sciences Beijing 100190 China;
