I tried to recreate the Quantum Eraser experiment into a thought experiment with a few changes. It left me a little perplexed as to what outcomes I should expect. Any help would be appreciated.
Lets say you have 2 entangled photons so that when one is blue the other is always red. You shoot the 2 particles in different directions without measuring the color of the photon in either direction. Each particle, P1 and P2, hit a corresponding measuring device labeled D1 and D2. D1 only will measure the color of P1 when it hits it. D1 can also be turned on or off. When D1 measures the color of P1, P2 collapses into either red or blue state based on the measurement of P1. I assume prior to measurement from D1, P2 would be in both a red and blue state.
Now lets say that D2 has a single slit in front of it (like you would see in the double slit experiment, just with one slit) that has a yellow film over it that could alter the color of the photon passing through it to either orange or green based on if the photon was red or blue respectively . I imagine that if D1 was turned on you would gather data on D2 of either an orange or green mark based on D1's measurement collapsing P2. However when D1 was turned off would the results on the wall at D2 change to brown dots as the photons would pass through the yellow film in both a red and blue state simultaneously?
Any help with this is greatly appreciated.
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