Entangled-state generation with an intrinsically pure single-photon source and a weak coherent source
Rui‐Bo Jin, Ryōsuke Shimizu, Fumihiro Kaneda, Yasuyoshi Mitsumori, Hideo Kosaka, Keiichi Edamatsu · Physical Review A · 2013
We report on the experimental generation of an entangled state with a spectrally pure heralded single-photon state and a weak coherent state. Our source, which was as efficient as that reported in our previous report [Phys. Rev. A 83, 031805 (2011)], was much brighter than those reported in earlier experiments using similar configurations. This entanglement system is useful for quantum information protocols that require indistinguishable photons from independent sources.