1. Physics
and Engineering Physics, Tulane University, New Orleans, Louisiana 70118, United States
2. Computational
Chemistry, University of Potsdam, 14476 Potsdam, Germany
3. Department
of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849-5312, United States
4. Key
Laboratory of Quantum Information, University of Science and Technology of China, Hefei, Anhui 230026, China
5. COMP/Department
of Applied Physics, Aalto University School of Science, P.O. Box 11100, FI-00076 Aalto, Finland