1. Institute for Quantum Computing & Department of Electrical and Computer Engineering University of Waterloo Ontario N2L 3G1 Canada
2. College of Physics Science Qingdao University Qingdao 266071 China
3. Division of Physical Science and Engineering King Abdullah University of Science & Technology (KAUST) Thuwal 23955‐6900 Saudi Arabia
4. Department of Physics and Microelectronics Zhengzhou University Zhengzhou 450001 China
5. School of Materials Science and Engineering Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education Tongji University Shanghai 201804 China
6. Department of Physics Plasma Science and Fusion Center and Francis Bitter Magnet Laboratory Massachusetts Institute of Technology Cambridge MA 02139 USA