Secure Communication over Zero-Private Capacity Quantum Channels

@inproceedings{Gyongyosi2012SecureCO,
  title={Secure Communication over Zero-Private Capacity Quantum Channels},
  author={Laszlo Gyongyosi and S{\'a}ndor Imre},
  booktitle={Turing-100},
  year={2012}
}
In this work a new phenomenon called polaractivation is introduced. Polaractivation is based on quantum polar encoding and the result is similar to the superactivation effect — positive capacity can be achieved with zero-capacity quantum channels. However, polaractivation has many advantages over the superactivation: it is limited neither by any preliminary conditions on the quantum channel nor on the maps of other channels involved in the joint channel structure. We prove that the… 

Figures from this paper

Polaractivation of hidden private classical capacity region of quantum channels
  • L. Gyongyosi
  • Computer Science
    2013 IEEE Symposium on Swarm Intelligence (SIS)
  • 2013
TLDR
With the help of the proposed polaractivation scheme private classical information can be transmitted over a quantum channel that initially was not capable of private communication and the method works for arbitrary quantum channels for which a given criteria in the symmetric classical capacity is satisfied.
Opening of hidden capacity-domains of quantum channels
TLDR
It is proved that the polaractivation works for arbitrary quantum channels for which a given criteria in the symmetric classical capacity is satisfied and makes it possible to open the hidden capacity-domains of a noisy quantum channel.

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