Analysis of counterfactuality of counterfactual communication protocols

Lev Vaidman
Phys. Rev. A 99, 052127 – Published 29 May 2019

Abstract

Counterfactual communication, i.e., a communication without particles traveling in the transmission channel, is a bizarre quantum effect. Starting from interaction-free measurements many protocols achieving various tasks from counterfactual cryptography to counterfactual transfer of quantum states were proposed and implemented in experiments. However, the meaning of conterfactuality in various protocols remains a controversial topic. A simple error-free counterfactual protocol is proposed. This protocol and its modification are used as a test bed for analysis of the meaning of counterfactuality to clarify the counterfactuality status of various counterfactual proposals.

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  • Received 17 January 2019

DOI:https://doi.org/10.1103/PhysRevA.99.052127

©2019 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & TechnologyGeneral Physics

Authors & Affiliations

Lev Vaidman

  • Raymond and Beverly Sackler School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv 69978, Israel

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Issue

Vol. 99, Iss. 5 — May 2019

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