1. Key Laboratory of Low‐Dimensional Quantum Structures and Quantum Control of Ministry of Education Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications Hunan Normal University Changsha 410081 China
2. Theoretical Quantum Physics Laboratory RIKEN Cluster for Pioneering Research Wako‐shi Saitama 351‐0198 Japan
3. Department of Engineering Science and Mechanics and Materials Research Institute (MRI) The Pennsylvania State University University Park PA 16802 USA
4. Physics Department The University of Michigan Ann Arbor MI 48109 USA