  Following the recent theoretical predictions given in a paper [PRA 88, 013810
(2013)], we reported on an experimental realization of an image cloning beyond
usual diffraction through coherent population trapping (CPT) effect in a hot
rubidium vapor. In our experiment, an alphabet image was transferred from a
coupling field to a probe field based on the CPT effect. Furthermore, we
demonstrated that the cloned probe field carrying the image transmitted without
usual diffraction. To our best knowledge, there is no any such an experimental
report about images cloning beyond diffraction. We believe this mechanism based
on CPT definitely has important applications in image metrology, image
processing and biological imaging.
