| Affiliation: | 1. Key Laboratory For Quantum Information and Measurements of MOE, Department of Physics, Tsinghua University, Beijing 100084, China
2. Department of Materials Science and Engineering, Beijing Normal University, Beijing 100875, China
3. Testing and Analytical Center,Beijing Normal University,Beijing,100875,China
4. Department of Physics,Beijing Normal University,Beijing,100875,China
5. Key Laboratory For Quantum Information and Measurements of MOE, Department of Physics, Tsinghua University, Beijing 100084, China;Key Lablratory For Atomic and Molecular Nanosciences,Tsinghua University,Beijing,100084,China |
