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    We introduce a new supersymmetry-inspired method for robust single-mode lasing in coupled microcavities. This technique utilizes a unique Hamiltonian factorization to achieve stable lasing, offering broader parameter control.

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    Area of Science:

    • Quantum optics
    • Condensed matter physics
    • Photonics

    Background:

    • Achieving robust single-mode lasing in coupled microcavity arrays is crucial for advanced photonic devices.
    • Existing methods often face limitations in parameter stability and mode selectivity.
    • Topological protection in 1D systems offers robustness but typically requires localization at domain walls or edges.

    Purpose of the Study:

    • To propose a novel supersymmetry-inspired scheme for robust single-mode lasing in coupled microcavity arrays.
    • To leverage Hamiltonian factorization and chiral symmetry for enhanced lasing properties.
    • To demonstrate a method for achieving single-mode lasing over a wider parameter regime.

    Main Methods:

    • Factorizing the array Hamiltonian into a "supercharge" partner array.
    • Pumping a single sublattice of the partner array to induce lasing.
    • Utilizing chiral symmetry for zero-mode protection.
    • Designing the zero mode with a uniform intensity profile.

    Main Results:

    • Demonstration of a robust single-mode lasing scheme in coupled microcavity arrays.
    • Identification of an unpaired zero mode protected by chiral symmetry.
    • Lasing is induced preferentially by pumping a single sublattice of the partner array.
    • Achieved single-mode lasing over a wider parameter regime due to a uniform zero-mode intensity profile.

    Conclusions:

    • The proposed supersymmetry-inspired scheme enables robust single-mode lasing in coupled microcavity arrays.
    • Chiral symmetry provides protection for the zero mode, independent of spatial localization.
    • Uniform intensity profile design enhances the robustness and parameter range of single-mode lasing.