Giant nonlinear interaction between two optical beams via a quantum dot embedded in a photonic wire

Research output: Contribution to journalJournal article – Annual report year: 2018Researchpeer-review

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  • Author: Nguyen, H.A.

    Universite Grenoble Alpes, France

  • Author: Grange, T.

    Universite Grenoble Alpes, France

  • Author: Reznychenko, B.

    Universite Grenoble Alpes, France

  • Author: Yeo, I.

    Universite Grenoble Alpes, France

  • Author: de Assis, P.L.

    Universite Grenoble Alpes, France

  • Author: Tumanov, D.

    Universite Grenoble Alpes, France

  • Author: Fratini, F.

    Universite Grenoble Alpes, France

  • Author: Malik, N. S.

    CNRS, France

  • Author: Dupuy, E.

    CNRS, France

  • Author: Gregersen, Niels

    Quantum and Laser Photonics, Department of Photonics Engineering, Technical University of Denmark, Ørsteds Plads, 2800, Kgs. Lyngby, Denmark

  • Author: Auffeves, A.

    Universite Grenoble Alpes, France

  • Author: Gérard, J-M.

    CNRS, France

  • Author: Claudon, J.

    CNRS, France

  • Author: Poizat, Jean-Philippe

    Universite Grenoble Alpes, France

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Optical nonlinearities usually appear for large intensities, but discrete transitions allow for giant nonlinearities operating at the single-photon level. This has been demonstrated in the last decade for a single optical mode with cold atomic gases, or single two-level systems coupled to light via a tailored photonic environment. Here, we demonstrate a two-mode giant nonlinearity with a single semiconductor quantum dot (QD) embedded in a photonic wire antenna. We exploit two detuned optical transitions associated with the exciton-biexciton QD level scheme. Owing to the broadband waveguide antenna, the two transitions are efficiently interfaced with two free-space laser beams. The reflection of one laser beam is then controlled by the other beam, with a threshold power as low as 10 photons per exciton lifetime (1.6 nW). Such a two-color nonlinearity opens appealing perspectives for the ealization of ultralow-power logical gates and optical quantum gates, and could also be implemented in an integrated photonic circuit based on planar waveguides.
Original languageEnglish
Article number201106
JournalPhysical Review B (Condensed Matter and Materials Physics)
Volume97
Number of pages5
ISSN1098-0121
DOIs
Publication statusPublished - 2018
CitationsWeb of Science® Times Cited: No match on DOI

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