Quantum Bit Commitment and the Reality of the Quantum State

@article{Srikanth2018QuantumBC,
  title={Quantum Bit Commitment and the Reality of the Quantum State},
  author={R. Srikanth},
  journal={Foundations of Physics},
  year={2018},
  volume={48},
  pages={92-109}
}
  • R. Srikanth
  • Published 2018
  • Computer Science, Physics, Mathematics
  • Foundations of Physics
Quantum bit commitment is insecure in the standard non-relativistic quantum cryptographic framework, essentially because Alice can exploit quantum steering to defer making her commitment. Two assumptions in this framework are that: (a) Alice knows the ensembles of evidence E corresponding to either commitment; and (b) system E is quantum rather than classical. Here, we show how relaxing assumption (a) or (b) can render her malicious steering operation indeterminable or inexistent, respectively… Expand
3 Citations
Unconditionally secure quantum bit commitment based on the uncertainty principle
  • G. He
  • Computer Science, Physics
  • 2017
TLDR
A simple QBC protocol is proposed which manages to evade the no-go proofs and is found that in high-dimensional systems, there exist some states which can display a chaos effect in quantum steering. Expand
Unconditionally secure quantum bit commitment based on the uncertainty principle
Unconditionally secure quantum bit commitment (QBC) was considered impossible. But the no-go proofs are based on the Hughston–Jozsa–Wootters (HJW) theorem (a.k.a. the Uhlmann theorem). Recently, itExpand

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