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Conditional preparation of single photons for scalable quantum-optical networking

Alfred B. U'Ren·Christine Silberhorn·Konrad Banaszek·Ian A. Walmsley
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Abstract

A fundamental prerequisite for the implementation of linear optical quantum computation is a source of single-photon wavepackets capable of high-visibility interference in scalable networks. These conditions can be met with micro-structured waveguides in conjunction with ultra-short classical timing pulses. By exploiting a novel type-II phasematching configuration we demonstrate a waveguided single photon source exhibiting a conditional detection efficiency exceeding 51% (which corresponds to a preparation efficiency of 85%) and extraordinarily high detection rates of up to 8.5x10^5 coincidences/[s.mW].

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Alfred B. U'Ren, Christine Silberhorn, Konrad Banaszek, Ian A. Walmsley. 2003-12-13. Conditional preparation of single photons for scalable quantum-optical networking. https://doi.org/10.1103/physrevlett.93.093601

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