1. Joint Quantum Institute, Joint Center for Quantum Information and Computer Science, and Department of Physics, University of Maryland, College Park, MD 20742, USA.
2. IonQ, Inc., College Park, MD 20740, USA.
3. Oregon Center for Optical, Molecular and Quantum Science, and Department of Physics, University of Oregon, Eugene, OR 97403, USA.
4. Joint Quantum Institute and Joint Center for Quantum Information and Computer Science, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
5. The White House Office of Science and Technology Policy, Washington, DC 20001, USA.