[1] Uppsala Univ, Dept Phys & Astron, BOX 516, S-75120 Uppsala, Sweden
[2] Tech Univ Denmark, DK-2800 Lyngby, Denmark
[3] Univ Liverpool, Dept Chem, Liverpool L69 7ZD, Merseyside, England
[4] UCL, London Ctr Nanotechnol, Thomas Young Ctr, Dept Phys & Astron, London WC1E 6BT, England
[5] UCL, Dept Chem, London WC1E 6BT, England
[6] Beijing Computat Sci Res Ctr, Beijing 100193, Peoples R China
[7] Princeton Univ, Princeton Ctr Theoret Sci, Princeton, NJ 08544 USA
[8] Univ Copenhagen, Dept Chem, Univ Pk 5, DK-2100 Copenhagen, Denmark
[9] Peking Univ, Int Ctr Quantum Mat, Beijing 100871, Peoples R China
[10] Peking Univ, Sch Phys, Beijing 100871, Peoples R China
[11] KTH Royal Inst Technol, Dept Chem, S-10044 Stockholm, Sweden
[12] Swedish Univ Agr Sci, Dept Chem & Biotechnol, Box 7015, S-75007 Uppsala, Sweden
[13] Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA
[14] Ecole Polytech Fed Lausanne, Sch Engn, Inst Bioengn & Mat Sci & Engn, Lab Fundamental BioPhoton,Lab Computat Sci & Mode, CH-1015 Lausanne, Switzerland
[15] Ecole Polytech Fed Lausanne, Lausanne Ctr Ultrafast Sci, CH-1015 Lausanne, Switzerland
[16] Uppsala Univ, Dept Cell & Mol Biol, Box 596, SE-75124 Uppsala, Sweden