Enhancing Image Contrast Using Coherent States and Photon Number Resolving Detectors
Aaron Pearlman, Alexander E. Ling, Elizabeth A. Goldschmidt, Jingyun Fan, Christoph Wildfeuer, Alan L. Migdall
We experimentally map the transverse profile of diffraction-limited beams using photon number resolving detectors. We observe strong compression of diffracted beam profiles for high detected photon number. This effect leads to higher contrast than a conventional intensity profile between two Airy disk-beams separated by the Rayleigh criterion.