1. Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08540, United States
2. Department of Chemistry and Chemical Theory Center, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
3. Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08540, United States
4. Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
5. Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, United States