Depolarization channels with zero-bandwidth noises

Preprint

21 July 2004

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.quant-ph/0407166

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.

Keywords

DEPOLARIZATION CHANNELS
ZERO BANDWIDTH NOISES
CHANNELS WITH ZERO
MEMORY EFFECTS
SIMPLE MODEL

All Related Versions

Version 1, 2004-07-21, ArXiv
Published version: Physical Review A, 71 (1), 012322.

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