A versatile source of single photons for quantum information processing

Michael Förtsch (), Josef U. Fürst, Christoffer Wittmann, Dmitry Strekalov, Andrea Aiello, Maria V. Chekhova, Christine Silberhorn, Gerd Leuchs and Christoph Marquardt ()
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Michael Förtsch: Max Planck Institute for the Science of Light
Josef U. Fürst: Max Planck Institute for the Science of Light
Christoffer Wittmann: Max Planck Institute for the Science of Light
Dmitry Strekalov: Max Planck Institute for the Science of Light
Andrea Aiello: Max Planck Institute for the Science of Light
Maria V. Chekhova: Max Planck Institute for the Science of Light
Christine Silberhorn: Applied Physics, University of Paderborn
Gerd Leuchs: Max Planck Institute for the Science of Light
Christoph Marquardt: Max Planck Institute for the Science of Light

Nature Communications, 2013, vol. 4, issue 1, 1-5

Abstract: Abstract The generation of high-quality single-photon states with controllable narrow spectral bandwidths and central frequencies is key to facilitate efficient coupling of any atomic system to non-classical light fields. Such an interaction is essential in numerous experiments for fundamental science and applications in quantum communication and information processing, as well as in quantum metrology. Here we implement a fully tunable, narrow-band and efficient single-photon source based on a whispering gallery mode resonator. Our disk-shaped, monolithic and intrinsically stable resonator is made of lithium niobate and supports a cavity-assisted spontaneous parametric down-conversion process. The generated photon pairs are emitted into two highly tunable resonator modes. We verify wavelength tuning over 100 nm of both modes with controllable bandwidth between 7.2 and 13 MHz. Heralding of single photons yields anti-bunching with g(2)(0)

Date: 2013
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms2838

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DOI: 10.1038/ncomms2838

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