Counterfactual quantum erasure: spooky action without entanglement
arXiv:1606.03081 · doi:10.1098/rsos.171250
Abstract
We combine the eyebrow-raising quantum phenomena of erasure and counterfactuality for the first time, proposing a simple yet unusual quantum eraser: A distant Bob can decide to erase which-path information from Alice's photon, dramatically restoring interference, without previously-shared entanglement, and without Alice's photon ever leaving her lab.
5 pages, 4 figures