1. Department of Chemistry, North Carolina State University 1 , Raleigh, North Carolina 27607
2. Adamas Nanotechnologies, Inc. 2 , Raleigh, North Carolina 27617
3. Department of Physics, CUNY—City College of New York 3 , New York, New York 10031
4. CUNY—Graduate Center 4 , New York, New York 10016
5. Department of Physics, Ben Gurion University of the Negev 5 , Beer-Sheva 8410501, Israel
6. Department of Chemistry, UC Berkeley 6 , Berkeley California 94720
7. Chemical Sciences Division, Lawrence Berkeley National Laboratory 7 , Berkeley, California 94720
8. CIFAR Program, Quantum Information Science 8 , 661 University Ave., Toronto, Ontario M5G 1M1, Canada