In My Time of Dying: How I Came Face to Face with the Idea of an Afterlife

by Sebastian Junger

That is to say, on one island, researchers shot a particle at the double slits, and it passed through both of them as an unobserved wave function. Eighty-eight miles away, via fiber optics cable, they then shot its entangled twin at double slits while observing it with a photon detector; as expected, its wave function collapsed, and it passed through only one slit. But now the universe had a problem: Entangled particles have to do the exact same thing, but the delayed choice had tricked them into acting differently. That was impossible. When researchers checked the strike plate of the first test, though, they found that the wave function had been retroactively collapsed by the second test and forced through a single slit. Quantum information had been erased.