This page is still in progress.Imaging with quantum states of light. P. Moreau, E. Toninelli, T. Gregory and M. J. Padgett in Nature Rev. Phys. 1:367 (2019). What the paper says!?
This is an excellent review on single-photon imaging, with a good description of the various camera technologies.
There is a strong focus on SPDC source.
According to the Authors, the quantum correlations motivated imaging:
The availability of such a state and the simplicity of its generation — which requires only a nonlinear crystal to be pumped with a laser — initiated the development of new types of imaging experiments. Through these experiments emerged the field of quantum imaging.
They credit Jost et al.[1] with the first study of spatial quantum correlations:
