Observation of Single-Photon Switching

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dc.creatorChen, Yong-Fan
dc.creatorTsai, Zen-Hsiang
dc.creatorLiu, Yu-Chen
dc.creatorYu, Ite A.
dc.date2005-01-31
dc.date.accessioned2026-07-07T05:54:05Z
dc.date.available2026-07-07T05:54:05Z
dc.descriptionWe report an experimental demonstration of single-photon switching in laser-cooled $^{87}$Rb atoms. A resonant probe pulse with an energy per unit area of one photon per $λ^2/2π$ propagates through the optically thick atoms. Its energy transmittance is greater than 63% or loss is less than $e^{-1}$ due to the effect of electromagnetically induced transparency. In the presence of a switching pulse with an energy per unit area of 1.4 photons per $λ^2/2π$, the energy transmittance of the same probe pulse becomes less than 37% or $e^{-1}$. This substantial reduction of the probe transmittance caused by single switching photons has potential applications in single-photon-level nonlinear optics and the manipulation of quantum information.
dc.description4 pages, 3 figures, REVTeX
dc.identifierhttps://arxiv.org/abs/physics/0501155
dc.identifierhttp://arxiv.org/abs/physics/0501155
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/86848
dc.subjectAtomic Physics
dc.titleObservation of Single-Photon Switching
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