\BOOKMARK [0][-]{section*.2}{Nonlinear photon-atom coupling with 4Pi microscopy}{}% 2 \BOOKMARK [1][-]{section*.1}{Abstract}{section*.2}% 1 \BOOKMARK [1][-]{section*.3}{INTRODUCTION}{section*.2}% 3 \BOOKMARK [1][-]{section*.4}{EXPERIMENTAL SETUP}{section*.2}% 4 \BOOKMARK [1][-]{section*.5}{EXTINCTION EXPERIMENT}{section*.2}% 5 \BOOKMARK [1][-]{section*.6}{SIGNATURE OF NONLINEAR INTERACTION IN PHOTON STATISTICS}{section*.2}% 6 \BOOKMARK [1][-]{section*.7}{DISCUSSION AND OUTLOOK}{section*.2}% 7 \BOOKMARK [1][-]{section*.8}{Acknowledgments}{section*.2}% 8 \BOOKMARK [1][-]{section*.9}{OPTICAL SETUP}{section*.2}% 9 \BOOKMARK [1][-]{section*.10}{EXPERIMENTAL SEQUENCE AND POSTSELECTION OF ATOM POSITION}{section*.2}% 10 \BOOKMARK [1][-]{section*.11}{NORMALIZATION OF SECOND ORDER CORRELATION FUNCTION}{section*.2}% 11 \BOOKMARK [1][-]{section*.12}{References}{section*.2}% 12