Does anyone know whether the following variation has been tried for the eraser experiment?
>Setup as shown
>Place secondary photon splitters after detectors A and B
>We now have an interference screen particle and two clones of the interference particle
>Erase one of the clones and then observe the other
What happens? If the 3 particles are all entangled, does the universe implode? If you get results based upon only the two new particles, why? Does the secondary split eliminate entanglement with the interference screen particle?