22 April 2016 Deterministic photon-atom and photon-photon interactions based on single-photon Raman interaction
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We demonstrate a passive scheme for deterministic interactions between a single photon and a single atom. Relying on single-photon Raman interaction (SPRINT), this control-fields free scheme swaps a flying qubit, encoded in the two possible input modes of a photon, with a stationary qubit, encoded in the two ground states of the atom, and can be also harnessed to perform universal quantum gates. Using SPRINT we experimentally demonstrated all-optical switching of single photons by single photons, and deterministic extraction of a single photon from an optical pulse. Applicable to any atom-like Lambda system, SPRINT provides a versatile building block for scalable quantum networks based on completely passive nodes interconnected and activated solely by single photons.
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Orel Bechler, Orel Bechler, Serge Rosenblum, Serge Rosenblum, Itay Shomroni, Itay Shomroni, Yulia Lovsky, Yulia Lovsky, Gabriel Guendelman, Gabriel Guendelman, Barak Dayan, Barak Dayan, "Deterministic photon-atom and photon-photon interactions based on single-photon Raman interaction", Proc. SPIE 9727, Laser Resonators, Microresonators, and Beam Control XVIII, 972706 (22 April 2016); doi: 10.1117/12.2219759; https://doi.org/10.1117/12.2219759


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