We present an experiment of nonclassical interference between a pure heralded single-photon state and a weak coherent state. Our experiment is the first to demonstrate that spectrally pure single photons can have high interference visibility, 89.4 \pm 0.5%, with weak coherent photons. Our scheme lays the groundwork for future experiments requiring quantum interference between photons in nonclassical states and those in coherent states.
@article{arxiv.1010.5638,
title = {High-visibility nonclassical interference between pure heralded single photons and weak coherent photons},
author = {Rui-Bo Jin and Jun Zhang and Ryosuke Shimizu and Nobuyuki Matsuda and Yasuyoshi Mitsumori and Hideo Kosaka and Keiichi Edamatsu},
journal= {arXiv preprint arXiv:1010.5638},
year = {2011}
}