Practical quantum repeaters with linear optics and double-photon guns
量子物理
2009-11-07 v1
摘要
We show how to create practical, efficient, quantum repeaters, employing double-photon guns, for long-distance optical quantum communication. The guns create polarization-entangled photon pairs on demand. One such source might be a semiconducter quantum dot, which has the distinct advantage over parametric down-conversion that the probability of creating a photon pair is close to one, while the probability of creating multiple pairs vanishes. The swapping and purifying components are implemented by polarizing beam splitters and probabilistic optical CNOT gates.
引用
@article{arxiv.quant-ph/0203134,
title = {Practical quantum repeaters with linear optics and double-photon guns},
author = {Pieter Kok and Colin P. Williams and Jonathan P. Dowling},
journal= {arXiv preprint arXiv:quant-ph/0203134},
year = {2009}
}
备注
4 pages, 4 figures ReVTeX