1. Cornell Univ. (United States)
2. Univ. of British Columbia (Canada)
3. NIST Quantum Devices Group (United States)
4. Stanford Univ. (United States)
5. SLAC National Accelerator Lab. (United States)
6. Princeton Univ. (United States)
7. The Pennsylvania State Univ. (United States)
8. Univ. of Michigan (United States)
9. Univ. of Pennsylvania (United States)
10. Pontificia Univ. Católica de Chile (Chile)