Ramelow, S.
, Mech, A.
, Giustina, M.
, Groeblacher, S.
, Wieczorek, W.
, Lita, A.
, Calkins, B.
, Gerrits, T.
, Nam, S.
, Zeilinger, A.
and Ursin, R.
(2013),
Highly efficient heralding of entangled single photons, Optics Express, [online], https://doi.org/10.1364/OE.21.006707
(Accessed September 14, 2024)
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Highly efficient heralding of entangled single photons
Published
Author(s)
Sven Ramelow, Alexandra Mech, Marissa Giustina, Simon Groeblacher, Witlef Wieczorek, , , , , Anton Zeilinger, Rupert Ursin
Abstract
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.Citation
Optics Express
Volume
21
Issue
6
Pub Type
Journals
Download Paper
Keywords
transition edge sensors, single photon detection, photon heralding, Bell inequality
Citation
Issues
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Created March 10, 2013, Updated October 12, 2021