1. Key Laboratory of Micro-nano Measurement, Manipulation and PhysicsSchool of Physics and Nuclear Energy EngineeringBeihang University Beijing 100191 P.R. China
2. Beijing Academy of Quantum Information Sciences Beijing 100193 P.R. China
3. School of PhysicsCapital Normal University Beijing 100048 P.R. China
4. Institute of Frontier Science and Technology InnovationBeihang University Beijing 100191 P.R. China