Scheme of the experimental setup. The purple beam indicates the pump beam; the green beams are the signal and idler beams; and the red beams represent the noise. The object has three slits. The detectors are Si detectors. Reused from Sofer et al. (Phys Rev X 2019;9:031033) [11].

Progress in Medical Physics 2022;33:11~24 https://doi.org/10.14316/pmp.2022.33.2.11