[1] Australian Natl Univ, ACQAO, Canberra, ACT 0200, Australia
[2] Lab Kastler Brossel, F-75252 Paris 05, France
[3] Tech Univ Denmark, Dept Phys, DK-2800 Lyngby, Denmark
[4] Def Sci & Technol Org, Kingston, ACT 2604, Australia
[5] Univ New S Wales, Univ Coll, Sch Informat Technol & Elect Engn, Canberra, ACT 2600, Australia