Frankfurt 2006 – scientific programme

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Q: Quantenoptik und Photonik

Q 15: Quanteninformation II

Q 15.5: Talk

Monday, March 13, 2006, 18:00–18:15, HI

Heralded single-photon generation using imperfect single-photon sources and a two-photon-absorbing medium — •Artur Scherer, Thomas Konrad, Michael Nock, and Jürgen Audretsch — Fachbereich Physik der Universität Konstanz, AG-Audretsch, Postfach M 674, D-78457 Konstanz, Germany

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.