1. Centre for Emerging Device Technologies, Department of Engineering Physics, Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario, L8S 4L7, Canada, Department of Physics and Astronomy, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, L8S 4M1, Canada, and Institute for Quantum Computing, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, N2L 3G1, Canada