1. Université de Lyon, F-69622, Lyon, France, Université Lyon 1, Villeurbanne CNRS, UMR 5579, LASIM (M.B., V.M.-R., W.-Q.L., Q.-L.M., J.Y.); and State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, P.R. China (W.-Q.L., L.-J.Z., H.-P.Z.)