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arXiv · 1303.2780

Entangled state generation with an intrinsically pure single-photon source and a weak coherent source

Rui-Bo Jin·Ryosuke Shimizu·Fumihiro Kaneda·Yasuyoshi Mitsumori·Hideo Kosaka·Keiichi Edamatsu
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Abstract

We report on the experimental generation of an entangled state with a spectrally pure heralded single-photon state and a weak coherent state. By choosing group-velocity matching in the nonlinear crystal, our system for producing entangled photons was 60 times brighter than that in the earlier experiment [Phys. Rev. Lett. 90, 240401 (2003)], with no need of bandpass filters. This entanglement system is useful for quantum information protocols that require indistinguishable photons from independent sources.

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Rui-Bo Jin, Ryosuke Shimizu, Fumihiro Kaneda, Yasuyoshi Mitsumori, Hideo Kosaka, Keiichi Edamatsu. 2013-07-24. Entangled state generation with an intrinsically pure single-photon source and a weak coherent source. https://doi.org/10.1103/physreva.88.012324

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