  We report results of two-photon quantum holography where spatial information
stored in phase holograms is retrieved by measuring quantum spatial
correlations between two images formed by spatially entangled twin photons with
a dimensionality of 1790 in the two-dimensional transverse space. In our
experiments, the entire flux of spontaneous down converted photons illuminates
the phase holograms and the photons of pairs signal-idler transmitted by the
holograms are detected separately in far field on two electron-multiplying
charge coupled device cameras.
