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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

quant-pharXiv:quant-ph/0510113

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 1 with the vacuum 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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