1. State
Key Laboratory of Quantum Optics and Quantum Optics Devices, Laser
Spectroscopy Laboratory, Shanxi University, Taiyuan 030006, China
2. School
of Physics and Chemistry, Research Center for Advanced Computation, Xihua University, Chengdu, Sichuan 610039, China
3. State
Key Laboratory for Low-Dimensional Quantum Physics, Department of
Physics, Tsinghua University, Beijing 100084, China
4. Institute
of Atomic and Molecular Physics, Sichuan University, Chengdu, Sichuan 610065, China