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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
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Channel competition in emitter-plasmon coupling.

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    Researchers explored how emitters interact with plasmonic nanoantennas. They found distinct coupling pathways, the dipolar mode and pseudomode, offering new design rules for controlling light-matter interactions.

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    Area of Science:

    • Plasmonics
    • Nanophotonics
    • Quantum Optics

    Background:

    • Emitters near plasmonic nanoantennas couple to antenna modes.
    • High-order modes, termed pseudomodes, also significantly influence emitter coupling.

    Purpose of the Study:

    • Investigate differences between dipolar and pseudomode coupling channels.
    • Provide physical insight into emitter-plasmonic nanoantenna interactions.
    • Reveal design rules for controlling coupling competition.

    Main Methods:

    • Theoretical investigation of a dipole emitter coupled to a silver nanorod.
    • Analysis of distinct mechanisms, characteristics, and parameter dependencies.

    Main Results:

    • Dipolar and pseudomode channels exhibit distinct mechanisms and characteristics.
    • Chromatic dispersion and field distribution differ between the two channels.
    • Coupling is dependent on emitter-antenna distance, antenna geometry, and material loss.

    Conclusions:

    • The study elucidates the distinct nature of dipolar and pseudomode coupling.
    • Identified key factors influencing the competition between these channels.
    • Offers design principles for optimizing light-matter interactions in plasmonic systems.