Secure Key Distribution via Pre- and Post-Selected Quantum States

@article{Bub2001SecureKD,
  title={Secure Key Distribution via Pre- and Post-Selected Quantum States},
  author={Jeffrey Bub},
  journal={Physical Review A},
  year={2001},
  volume={63},
  pages={032309}
}
  • J. Bub
  • Published 19 June 2000
  • Physics
  • Physical Review A
A quantum key distribution scheme whose security depends on the features of pre- and post-selected quantum states is described. 
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From rigorous mathematical and numerical analyses, it is concluded that Bub’s protocol is weaker than the BennettBrassard protocol of 1984 (BB84) against both the intercept/resend and translucent attacks.
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References

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The Quantum Bit Commitment Theorem
TLDR
The quantum bit commitment theorem is reviewed here and the central conceptual point, that an “Einstein–Podolsky–Rosen” attack or cheating strategy can always be applied, is clarified and the question of whether following such a cheat strategy can ever be disadvantageous to the cheater is considered and answered in the negative.
Spin measurement retrodiction revisited
The retrodiction of spin measurements along a set of different axes is revisited in detail. The problem is presented in two different pictures, a geometric and a general algebraic one. Explicit