Linear optical quantum computation with imperfect entangled photon-pair sources and inefficient non-photon-number-resolving detectors
Quantum Physics
2010-05-10 v1
Abstract
We propose a scheme for efficient cluster state quantum computation by using imperfect polarization-entangled photon-pair sources, linear optical elements and inefficient non-photon-number-resolving detectors. The efficiency threshold for loss tolerance in our scheme requires the product of source and detector efficiencies should be >1/2 - the best known figure. This figure applies to uncorrelated loss. We further find that the loss threshold is unaffected by correlated loss in the photon pair source. Our approach sheds new light on efficient linear optical quantum computation with imperfect experimental conditions.
Keywords
Cite
@article{arxiv.1005.1126,
title = {Linear optical quantum computation with imperfect entangled photon-pair sources and inefficient non-photon-number-resolving detectors},
author = {Yan-Xiao Gong and Xu-Bo Zou and Timothy C. Ralph and Shi-Ning Zhu and Guang-Can Guo},
journal= {arXiv preprint arXiv:1005.1126},
year = {2010}
}
Comments
5 pages, 2 figures