Highly efficient heralding of entangled single photons

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 cor...

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Bibliographic Details
Published inOptics express Vol. 21; no. 6; pp. 6707 - 6717
Main Authors Ramelow, Sven, Mech, Alexandra, Giustina, Marissa, Gröblacher, Simon, Wieczorek, Witlef, Beyer, Jörn, Lita, Adriana, Calkins, Brice, Gerrits, Thomas, Nam, Sae Woo, Zeilinger, Anton, Ursin, Rupert
Format Journal Article
LanguageEnglish
Published United States 25.03.2013
Subjects
Equipment Design
Equipment Failure Analysis
Fiber Optic Technology - instrumentation
Photons
Refractometry - instrumentation
Surface Plasmon Resonance - instrumentation
Transducers
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Summary: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.
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ISSN:1094-4087
1094-4087
DOI:10.1364/oe.21.006707