1. Department of Physics, International Centre for Quantum and Molecular Structures, Shanghai University 1 , Shanghai 200444, China
2. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences 2 , Wuhan 430071, China
3. University of Chinese Academy of Sciences 3 , Beijing 100049, China
4. Zhejiang Laboratory 4 , Hangzhou 311100, China