We propose a scheme for long-distance quantum communication where the elementary entanglement is generated through two-photon interference and quantum swapping is performed through one-photon interference. Local "polarization" maximally entangled states of atomic ensembles are generated by absorbing a single photon from on-demand single-photon sources. This scheme is robust against phase fluctuations in the quantum channels, moreover speeds up long-distance high-fidelity entanglement generation rate.
@article{arxiv.0809.3661,
title = {Long-distance quantum communication with "polarization" maximally entangled states},
author = {Fang-Yu Hong and Shi-Jie Xiong and W. H. Tang},
journal= {arXiv preprint arXiv:0809.3661},
year = {2010}
}