Depolarization channels with zero-bandwidth noises
Quantum Physics
2016-08-16 v1
Abstract
A simple model describing depolarization channels with zero-bandwidth environment is presented and exactly solved. The environment is modelled by Lorentzian, telegraphic and Gaussian zero-bandwidth noises. Such channels can go beyond the standard Markov dynamics and therefore can illustrate the influence of memory effects of the noisy communication channel on the transmitted information. To quantify the disturbance of quantum states the entanglement fidelity between arbitrary input and output states is investigated.
Cite
@article{arxiv.quant-ph/0407166,
title = {Depolarization channels with zero-bandwidth noises},
author = {Andrzej Dragan and Krzysztow Wódkiewicz},
journal= {arXiv preprint arXiv:quant-ph/0407166},
year = {2016}
}
Comments
15 pages, 3 figures