Ultra-low power all-optical switch using a single quantum dot embedded in a photonic wire

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Documents

  • Author: Nguyen, H.A.

    Universite Grenoble Alpes, France

  • Author: Grange, T.

    Universite Grenoble Alpes, France

  • Author: Malik, N.S.

    CEA–Grenoble and Université Joseph Fourier–Grenoble, France

  • Author: Dupuy, Emmanuel

    CEA–Grenoble and Université Joseph Fourier–Grenoble, France

  • Author: Tumanov, D.

    Universite Grenoble Alpes, France

  • Author: de Assis, P. L.

    Universite Grenoble Alpes, France

  • Author: Yeo, I.

    Universite Grenoble Alpes, France

  • Author: Fratini, F.

    Vienna University of Technology, Austria

  • Author: Gregersen, N.

    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: Gerard, J. M.

    CEA–Grenoble and Université Joseph Fourier–Grenoble, France

  • Author: Claudon, J.

    CEA–Grenoble and Université Joseph Fourier–Grenoble, France

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We present experimental results on two-mode optical giant non-linearity of a single InAs quantum dot (QD) embedded in a GaAs tapered photonic wire (fig. 1a). This system, in which the QD is efficiently coupled to a single guided mode, has been exploited to realize ultrabright single-photon sources [1,2]. We exploit here its broad operation bandwidth (>100 nm around 950 nm) to efficiently address two different transitions of the QD with two cw laser beams (fig. 1b). The laser coupled to the upper transition leads to a Rabi splitting of the intermediate state (Autler-Townes effect), affecting the resonant reflectivity of the laser coupled to the lower transition (see fig. 1c). By performing reflectivity experiment, we show that a coupling laser of 10 nW (50 photons per emitter lifetime) can modify the transmission of the probe laser, realizing an ultra-low power all-optical switch.
Original languageEnglish
Publication date2016
Number of pages1
Publication statusPublished - 2016
EventWilhelm und Else Heraeus-Seminar: "Hybrid Systems for Quantum Optics" - Bad Honnef , Germany
Duration: 10 Jan 201613 Jan 2016
Conference number: 604

Conference

ConferenceWilhelm und Else Heraeus-Seminar
Number604
CountryGermany
CityBad Honnef
Period10/01/201613/01/2016

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