Lower Bounds for Attainable Fidelity in Entanglement Purification
Quantum Physics
2009-10-31 v1
Abstract
We derive lower bounds for the attainable fidelity of standard entanglement purification protocols when local operations and measurements are subjected to errors. We introduce an error parameter which measures the distance between the ideal completely positive map describing a purification step and the one in the presence of errors. We derive non--linear maps for a lower bound of the fidelity at each purification step in terms of this parameter.
Cite
@article{arxiv.quant-ph/9809043,
title = {Lower Bounds for Attainable Fidelity in Entanglement Purification},
author = {G. Giedke and H. Briegel and J. I. Cirac and P. Zoller},
journal= {arXiv preprint arXiv:quant-ph/9809043},
year = {2009}
}
Comments
11 pages