The quantum eraser experiment is a variation of Young's double slit experiment establishing that when a photon is acted upon, in any way that permits determining which of the slits it has transited, then it cannot interfere with itself.
The quantum eraser experiment is a variation of Young's double slit experiment. It has transited. A photon is acted upon. This was in any way of the slits. This Young's double slit experiment is establishing this. This way permits determining which. It cannot interfere with itself.