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High-Brightness Source of Narrowband, Identical-Photon Pairs

Thompson, James K ; Simon, Jonathan ; Loh, Huanqian ; Vuletić, Vladan

Science (American Association for the Advancement of Science), 2006-07, Vol.313 (5783), p.74-77 [Periódico revisado por pares]

Washington, DC: American Association for the Advancement of Science

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Título:
High-Brightness Source of Narrowband, Identical-Photon Pairs
Autor: Thompson, James K ; Simon, Jonathan ; Loh, Huanqian ; Vuletić, Vladan
Assuntos: Alloys ; Atoms ; Classical and quantum physics: mechanics and fields ; Coincidence ; Exact sciences and technology ; Fundamental areas of phenomenology (including applications) ; Information processing ; Liquid metals ; Liquids ; Musical chords ; Nonclassical field states; squeezed, antibunched and sub-poissonian states; operational definitions of the phase of the field; phase measurements ; Optics ; Photons ; Physics ; Protons ; Quantum information ; Quantum optics ; Quantum theory ; Signal bandwidth ; Symmetry ; Voice leading
É parte de: Science (American Association for the Advancement of Science), 2006-07, Vol.313 (5783), p.74-77
Notas: http://www.scienceonline.org/
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Descrição: We generated narrowband pairs of nearly identical photons at a rate of 5 x 10⁴ pairs per second from a laser-cooled atomic ensemble inside an optical cavity. A two-photon interference experiment demonstrated that the photons could be made 90% indistinguishable, a key requirement for quantum information-processing protocols. Used as a conditional single-photon source, the system operated near the fundamental limits on recovery efficiency (57%), Fourier transform-limited bandwidth, and pair-generation-rate-limited suppression of two-photon events (factor of 33 below the Poisson limit). Each photon had a spectral width of 1.1 megahertz, ideal for interacting with atomic ensembles that form the basis of proposed quantum memories and logic.
Editor: Washington, DC: American Association for the Advancement of Science
Idioma: Inglês

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High-Brightness Source of Narrowband, Identical-Photon Pairs

Thompson, James K ; Simon, Jonathan ; Loh, Huanqian ; Vuletić, Vladan

Washington, DC: American Association for the Advancement of Science

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