Atom-mediated spontaneous parametric down-conversion in periodic waveguides

Sina Saravi*, Alexander N. Poddubny, Thomas Pertsch, Frank Setzpfandt, Andrey A. Sukhorukov

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    17 Citations (Scopus)


    We propose the concept of atom-mediated spontaneous parametric down-conversion, in which photon-pair generation can take place only in the presence of a single two-level emitter, relying on the bandgap evanescent modes of a nonlinear periodic waveguide. Using a guided signal mode, an evanescent idler mode, and an atom-like emitter with the idler’s transition frequency embedded in the structure, we find a heralded excitation mechanism, in which the detection of a signal photon outside the structure heralds the excitation of the embedded emitter. We use a rigorous Green’s function quantization method to model this heralding mechanism in a 1D periodic waveguide and determine its robustness against losses.

    Original languageEnglish
    Pages (from-to)4724-4727
    Number of pages4
    JournalOptics Letters
    Issue number22
    Publication statusPublished - 15 Nov 2017


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