1. Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907, United States
2. Department of Electrical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
3. Elmore Family School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, United States
4. Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
5. Purdue Quantum Science and Engineering Institute, Purdue University, West Lafayette, Indiana 47907, United States