[1] Friedrich Schiller Univ Jena, Helmholtz Inst Jena, Max Wien Pl 1, D-07743 Jena, Germany
[2] Friedrich Schiller Univ Jena, Inst Opt & Quantenelekt, Max Wien Pl 1, D-07743 Jena, Germany
[3] Weizmann Inst Sci, Dept Phys Complex Syst, 234 Herzl St, IL-76100 Rehovot, Israel
[4] Max Planck Inst Quantum Opt, Hans Kopfermann Str 1, D-85748 Garching, Germany
[5] Friedrich Alexander Univ Erlangen Nurnberg FAU, Dept Phys, Staudtstr 1, D-91058 Erlangen, Germany