Counterfactual quantum erasure: spooky action without entanglement
classification
🪐 quant-ph
keywords
quantumwithoutaliceentanglementerasurephotonactioncombine
read the original 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.
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