1. Max-Planck-Institut für Quantenoptik; Garching; Germany
2. Departamento de Física; Universidade de Coimbra; Portugal
3. Laboratoire Kastler Brossel, École Normale Supérieure; CNRS and Université P. et M. Curie; Paris; France
4. Physics Department, Yale University; New Haven; CT; USA
5. Institut für Strahlwerkzeuge, Universität Stuttgart; Germany
6. Physics Department, National Tsing Hua University; Hsinchu; Taiwan
7. Département de Physique, Université de Fribourg; Switzerland
8. Department of Chemistry, Princeton University; Princeton; NJ; USA
9. Paul Scherrer Institute; Villigen; Switzerland
10. I3N, Departamento de Física; Universidade de Aveiro; Portugal
11. Institute for Particle Physics; ETH Zurich; Switzerland