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Heralded single-photon generation using imperfect single-photon sources and a two-photon-absorbing medium

Thomas Konrad·Artur Scherer·Michael Nock·Juergen Audretsch
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Abstract

We propose a setup for a heralded, i.e. announced generation of a pure single-photon state given two imperfect sources whose outputs are represented by mixtures of the single-photon Fock state $\ket{1}$ with the vacuum $\ket{0}$. Our purification scheme uses beam splitters, photodetection and a two-photon-absorbing medium. The admixture of the vacuum is fully eliminated. We discuss two potential realizations of the scheme.

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Thomas Konrad, Artur Scherer, Michael Nock, Juergen Audretsch. 2006-03-22. Heralded single-photon generation using imperfect single-photon sources and a two-photon-absorbing medium. https://doi.org/10.1103/physreva.73.032327

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