A Single-Photon Server with Just One Atom

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dc.creatorHijlkema, Markus
dc.creatorWeber, Bernhard
dc.creatorSpecht, Holger P.
dc.creatorWebster, Simon C.
dc.creatorKuhn, Axel
dc.creatorRempe, Gerhard
dc.date2007-02-05
dc.date.accessioned2026-07-07T07:44:53Z
dc.date.available2026-07-07T07:44:53Z
dc.descriptionNeutral atoms are ideal objects for the deterministic processing of quantum information. Entanglement operations have been performed by photon exchange or controlled collisions. Atom-photon interfaces were realized with single atoms in free space or strongly coupled to an optical cavity. A long standing challenge with neutral atoms, however, is to overcome the limited observation time. Without exception, quantum effects appeared only after ensemble averaging. Here we report on a single-photon source with one-and-only-one atom quasi permanently coupled to a high-finesse cavity. Quasi permanent refers to our ability to keep the atom long enough to, first, quantify the photon-emission statistics and, second, guarantee the subsequent performance as a single-photon server delivering up to 300,000 photons for up to 30 seconds. This is achieved by a unique combination of single-photon generation and atom cooling. Our scheme brings truly deterministic protocols of quantum information science with light and matter within reach.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/quant-ph/0702034
dc.identifierhttp://arxiv.org/abs/quant-ph/0702034
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/123362
dc.subjectQuantum Physics
dc.titleA Single-Photon Server with Just One Atom
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