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arxiv: quant-ph/0611019 · v1 · submitted 2006-11-02 · 🪐 quant-ph

Generation of Pure-State Single-Photon Wavepackets by Conditional Preparation Based on Spontaneous Parametric Downconversion

Alfred B. U'Ren , Christine Silberhorn , Reinhard Erdmann , Konrad Banaszek , Warren P. Grice , Ian A. Walmsley , Michael G. Raymer This is my paper
classification 🪐 quant-ph
keywords photonconditionalpreparationsingledownconversionpairsparametricphotons
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We study the conditional preparation of single photons based on parametric downconversion, where the detection of one photon from a given pair heralds the existence of a single photon in the conjugate mode. We derive conditions on the modal characteristics of the photon pairs, which ensure that the conditionally prepared single photons are quantum-mechanically pure. We propose specific experimental techniques that yield photon pairs ideally suited for single-photon conditional preparation.

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