Figure 3
From: Experimental Limits of Ghost Diffraction: Popper’s Thought Experiment
Spatial frequency of the sinc envelope of the diffraction patterns as function of the slits’ width. The orange asterisks correspond to the measured ghost diffraction using a pump beam with a restricted aperture. The orange circles correspond to measured ghost diffraction but with an unrestricted pump. The solid blue line corresponds to the theoretical prediction for an unrestricted diffraction. The blue asterisks and circles correspond to the measured conventional diffraction measurements, with both restricted and unrestricted pump. Error bars not shown here for clarity are estimated to be ±0.1 × 10−4 μm−1 along the y axis.
