The laws of physics do not prohibit counterfactual communication

  title={The laws of physics do not prohibit counterfactual communication},
  author={Hatim Salih and Will McCutcheon and Jonte R Hance and John G. Rarity},
  journal={npj Quantum Information},
It has been conjectured that counterfactual communication is impossible, even for post-selected quantum particles. We strongly challenge this by proposing precisely such a counterfactual scheme where—unambiguously—none of Alice’s photons that correctly contribute to her information about Bob’s message have been to Bob. We demonstrate counterfactuality experimentally by means of weak measurements, and conceptually using consistent histories—thus simultaneously satisfying both criteria without… 
3 Citations
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I argue that recent "Protocol for Direct Counterfactual Quantum Communication" by Salih et al. [PRL 110, 170502 (2013), arXiv:1206.2042] is counterfactual only for one type of the information bit.