Аннотация:Traditional quantum ghost imaging technique uses three-photon spontaneous parametric down-conversion for producing beams of entangled photons. Two main factors limiting the spatial resolution of ghost imaging techniques are the (usually small) angular range in which the phase-matching condition is satisfied and angular apertures of the optical elements. In this paper, we propose to use the spontaneous four-wave back-mixing process to obtain quantum ghost images due to its ability to weaken the requirements on the phase-matching condition. Thus, only angular apertures of the optical elements remain as the main limiting factor, in contrast to setups where three-photon processes are used. Therefore, the upper bound on spatial resolution is higher. As a result, an improvement in resolution can be expected, assuming that other factors remain the same. Two design options that provide these benefits are proposed.