1. ZJU‐UIUC Institute Interdisciplinary Center for Quantum Information State Key Laboratory of Modern Optical Instrumentation Zhejiang University Hangzhou 310027 China
2. ZJU‐Hangzhou Global Science and Technology Innovation Center Key Laboratory of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang Zhejiang University Hangzhou 310027 China
3. Jinhua Institute of Zhejiang University Zhejiang University Jinhua 321099 China
4. Department of Electrical and Computer Engineering University of Illinois at Urbana‐Champaign Urbana IL 61801‐2991 USA