This paper challenges the conjecture that counterfactual communication is impossible, even for post-selected quantum states. The authors propose a counterfactual scheme where none of Alice's photons contributing to her information about Bob's message have interacted with Bob. They demonstrate this experimentally using weak measurements and conceptually using consistent histories, achieving a fidelity arbitrarily close to unity.
Publisher
npj Quantum Information
Published On
May 18, 2022
Authors
Hatim Salih, Will McCutcheon, Jonte R. Hance, John Rarity
Tags
counterfactual communication
quantum states
weak measurements
consistent histories
fidelity
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