1. Institute of Advanced Materials (INAM), Universitat Jaume I (UJI), 12006 Castelló, Spain
2. Erlangen Graduate School of Advanced Optical Technologies (SAOT), Friedrich-Alexander Universität Erlangen-Nürnberg, 91052 Erlangen, Germany
3. Quantum Theory Group, Department of Physics, University of Ottawa, Ottawa K1N 7N9, Canada