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A highly efficient heralded single-photon source for telecom wavelengths based on a PPLN waveguide.

Bock, M*; Lenhard, A*; Chunnilall, C J; Becher, C* (2016) A highly efficient heralded single-photon source for telecom wavelengths based on a PPLN waveguide. Opt. Express, 24 (21). pp. 23992-24001.

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Abstract

We present the realization of a highly efficient photon pair source based on spontaneous parametric downconversion (SPDC) in a periodically poled lithium niobate (PPLN) ridge waveguide. The source is suitable for long distance quantum communication applications as the photon pairs are located at the centers of the telecommunication O- and C- band at 1312 nm and 1557 nm. The high efficiency is confirmed by a conversion efficiency of 4 x (10^6) -- which is to our knowledge among the highest conversion efficiencies reported so far -- and a heralding eciency of 64.1 +/- 2:1%. The heralded single-photon properties are confirmed by the measurement of the photon statistics with a Click/No-Click method as well as the heralded g(2)-function. A minimum value for g(2) (0) of 0.001 +/- 0.0003 indicating clear antibunching has been observed.

Item Type: Article
Keywords: Heralded single-photon source, waveguide
Subjects: Quantum Phenomena
Optical Radiation and Photonics
Quantum Phenomena > Quantum Information Processing and Communication
Optical Radiation and Photonics > Few Photon Science
Identification number/DOI: 10.1364/OE.24.023992
Last Modified: 02 Feb 2018 13:13
URI: http://eprintspublications.npl.co.uk/id/eprint/7342

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