Quantum key distribution based on orthogonal states allows secure quantum bit commitment

@article{He2011QuantumKD,
  title={Quantum key distribution based on orthogonal states allows secure quantum bit commitment},
  author={G. P. He},
  journal={Journal of Physics A},
  year={2011},
  volume={44},
  pages={445305}
}
  • G. P. He
  • Published 2011
  • Mathematics, Physics
  • Journal of Physics A
  • For more than a decade, it was believed that unconditionally secure quantum bit commitment (QBC) is impossible. But based on a previously proposed quantum key distribution scheme using orthogonal states, here we build a QBC protocol in which the density matrices of the quantum states encoding the commitment do not satisfy a crucial condition on which the no-go proofs of QBC are based. Thus, the no-go proofs could be evaded. Our protocol is fault-tolerant and very feasible with currently… CONTINUE READING
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