1. Department of Physics, University of Waterloo, Waterloo, Ontario N2L3G1, Canada
2. Institute for Quantum Computing, University of Waterloo, Waterloo, Ontario N2L3G1, Canada
3. Department of Chemistry, University of Waterloo, Waterloo, Ontario N2L3G1, Canada
4. National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
5. Perimeter Institute for Theoretical Physics, Waterloo, Ontario N2L2Y5, Canada
6. Canadian Institute for Advanced Research, Toronto, Ontario M5G 1Z8, Canada