In quantum eraser experiments, which path information is made available and then destroyed before the photon hits the screen. Now, say we had an experiment in which a photon is sent to a double slit apparatus. However, one of the slits is covered. Thus, which path information is available. However, if we uncovered the other slit before the photon hit the screen would an interference pattern be produced? Is this, at least theoretically, a legitimate quantum eraser experiment?
Why do you keep referring to particles going through the slits when it seems evident that what went through the slits was in wave form and only becomes a particle when it hits the back screen or when the observer creates a decoherance by the use of an electrified camera during his observation.