1 Holonyak Micro and Nanotechnology Laboratory and Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
2 Illinois Quantum Information Science and Technology Center, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
3 Holonyak Micro and Nanotechnology Laboratory and Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA. kfang3@illinois.edu.
4 Illinois Quantum Information Science and Technology Center, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA. kfang3@illinois.edu.