Optimal quantum repeaters with doubly entangled state purification
Quantum Physics
2009-02-24 v1
Abstract
Recently, Briegel et al. present a quantum repeaters protocol using nest entanglement purification for long distance quantum communication(Physical Review Letters \textbf{81},5932). In this paper we present a modified scheme for constructing an optimal quantum repeater using doubly entangled photon pairs that overcomes the limitations of quantum communication via noisy channels. Based on the imperfect quantum operations and classical communications, the polarization entangled quantum channels can be built with a better efficiency.
Cite
@article{arxiv.0902.3862,
title = {Optimal quantum repeaters with doubly entangled state purification},
author = {Chuan Wang and Rong-Zhen Jiao and Hai-Qiang Ma and Yong Zhang and Li Yu},
journal= {arXiv preprint arXiv:0902.3862},
year = {2009}
}
Comments
5 pages and 3 figures