Counterfactual quantum cryptography.

  title={Counterfactual quantum cryptography.},
  author={Tae-gon Noh},
  journal={Physical review letters},
  volume={103 23},
  • T. Noh
  • Published 23 September 2008
  • Computer Science, Physics
  • Physical review letters
Quantum cryptography allows one to distribute a secret key between two remote parties using the fundamental principles of quantum mechanics. The well-known established paradigm for the quantum key distribution relies on the actual transmission of signal particle through a quantum channel. In this Letter, we show that the task of a secret key distribution can be accomplished even though a particle carrying secret information is not in fact transmitted through the quantum channel. The proposed… 

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