We show that a category of one-dimensional XY-type models may enable high-fidelity quantum state transmissions, regardless of details of coupling configurations. This observation leads to a fault- tolerant design of a state transmission setup. The setup is fault-tolerant, with specified thresholds, against engineering failures of coupling configurations, fabrication imperfections or defects, and even time-dependent noises. We propose the implementation of the fault-tolerant scheme using hard-core bosons in one-dimensional optical lattices.
@article{arxiv.1205.0462,
title = {Fault-Tolerant Exact State Transmission},
author = {Zhao-Ming Wang and Lian-Ao Wu and Michele Modugno and Wang Yao and Bin Shao},
journal= {arXiv preprint arXiv:1205.0462},
year = {2013}
}