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Demonstrating High Symmetric Single-Mode Single-Photon Heralding Efficiency in Spontaneous Parametric Downconversion

Marcelo Da Cunha Pereira, F. E. Becerra, Boris L. Glebov, Jingyun Fan, Sae Woo Nam, Alan L. Migdall

Published Jan 1, 2013• 0 citations
Publisher

Abstract

We demonstrate a symmetric, single-spatial mode, single-photon heralding efficiency of 84% for a type-II spontaneous parametric downconversion process. High efficiency, single-spatial mode collection is key to enabling many quantum information processing and quantum metrology applications.
DOI
10.1364/cleo_qels.2013.qm2c.6

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Single photons are an important prerequisite for a broad spectrum of quantum optical applications. We experimentally demonstrate a heralded single-photon source based on spontaneous parametric down-conversion in collinear bulk optics, and fiber-coupled bolometric transition-edge sensors. Without correcting for background, losses, or detection inefficiencies, we measure an overall heralding efficiency of 83%. By violating a Bell inequality, we confirm the single-photon character and high-quality entanglement of our heralded single photons which, in combination with the high heralding efficiency, are a necessary ingredient for advanced quantum communication protocols such as one-sided device-independent quantum key distribution.