Heralded single-photon generation using imperfect single-photon sources and a two-photon-absorbing medium
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X iv :q ua nt -p h/ 05 10 11 3 v3 22 M ar 2 00 6 Heralded single-photon generation using imperfect single-photon sources and a two-photon-absorbing medium Thomas Konrad∗, Artur Scherer, Michael Nock, and Jürgen Audretsch Fachbereich Physik, Universität Konstanz, D-78457 Konstanz, Germany 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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تاریخ انتشار 2006