1. Max-Planck-Institut für Quantenoptik, D-85748 Garching, Germany, Institute for Quantum Studies, Department of Physics, Texas A&M University, College Station, Texas 77843-4242, Physical Research Laboratory, Navrangpura, Ahmedabad-380 009, India, Department of Chemistry, Princeton University, Princeton, New Jersey 08544, and Theoretical Physics Laboratory, National University of Mongolia, 210646, Ulaanbaatar, Mongolia