Semiquantum key distribution with high quantum noise tolerance

@article{Amer2019SemiquantumKD,
  title={Semiquantum key distribution with high quantum noise tolerance},
  author={Omar Amer and Walter O. Krawec},
  journal={Physical Review A},
  year={2019}
}
Semi-quantum key distribution protocols are designed to allow two parties to establish a shared secret key, secure against an all-powerful adversary, even when one of the users is severely restricted in their quantum capabilities. While interesting from a theoretical standpoint, these protocols have the disadvantage that a two-way quantum communication channel is necessary which generally limits their theoretical efficiency and noise tolerance. In this paper, we construct a new semi-quantum key… 

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References

SHOWING 1-10 OF 56 REFERENCES

Mediated semiquantum key distribution

TLDR
This paper designs a new quantum key distribution protocol, allowing two limited semi-quantum or "classical" users to establish a shared secret key with the help of a fully quantum server and proves the unconditional security of this protocol even in the worst case: when this quantum server is an all-powerful adversary.

Security of a semi-quantum protocol where reflections contribute to the secret key

TLDR
In this work, a complete proof of security is provided by deriving a lower bound of the protocol’s key rate in the asymptotic scenario and finding an error threshold value such that for all error rates less than this threshold, it is guaranteed that A and B may distill a secure secret key.

Quantum key distribution with mismatched measurements over arbitrary channels

TLDR
This paper derives key-rate expressions for different quantum key distribution protocols from multiple channel statistics, including those gathered from mismatched measurement bases, and demonstrates that their tolerance to noise is higher than previously thought.

An information-theoretic security proof for QKD protocols

TLDR
A new technique based on direct information-theoretic arguments is presented, which gives new lower and upper bounds on the secret-key rate which only involve entropies of two-qubit density operators and which are thus easy to compute.

Semi-Quantum Key Distribution

TLDR
This work presents two protocols with this constraint, and proves their robustness against attacks: it is proved that any attempt of an adversary to obtain information necessarily induces some errors that the legitimate parties could notice.

Security proof of a semi-quantum key distribution protocol

  • Walter O. Krawec
  • Computer Science, Mathematics
    2015 IEEE International Symposium on Information Theory (ISIT)
  • 2015
TLDR
This paper proves the unconditional security of a particular semi-quantum protocol and derive an expression for its key rate, in the asymptotic scenario.

Information-theoretic security proof for quantum-key-distribution protocols (17 pages)

TLDR
This work investigates a general class of QKD protocols with one-way classical post-processing and gives new lower and upper bounds on the secret-key rate which only involve entropies of two-qubit density operators and which are thus easy to compute.

Key distillation from quantum channels using two-way communication protocols

TLDR
The results suggest that there may exist weakly entangling channels useless for key distribution using prepare and measure schemes, and several possibilities to enlarge these bounds are explored.

Security of two-way quantum key distribution

TLDR
This work provides a strategy to prove security for two-way quantum key distribution protocols against the most general quantum attack possible by an eavesdropper, and shows that a two- way protocol can outperform comparable one-way protocols.

Orthogonal-state-based and semi-quantum protocols for quantum private comparison in noisy environment

TLDR
Two new protocols for QPC are proposed, first of which does not use conjugate coding (uses orthogonal states only) and the second one allows the users other than TP to be classical whose activities are restricted to either reflecting a quantum state or measuring it in computational basis.
...