Multiplication of a ghost image by means of multimode entangled quantum states

It has been shown that multimode (multifrequency) entangled quantum states of light fields make it possible to simultaneously reconstruct several ghost images of an object from the measurement of the spatial correlation function between photons of the object channel and reconstruction channels, where radiation of a single frequency propagates. The detection of radiation in the object channel does not give information on the object. Calculations have been performed for four-frequency entangled quantum light fields.