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    Area of Science:

    • Optics and interferometry
    • Astronomy
    • Image processing

    Background:

    • Super localization by image inversion interferometry (SLIVER) shows promise for measuring separations of incoherent point-like sources.
    • Existing experimental SLIVER demonstrations are limited by interferometer instability.

    Purpose of the Study:

    • To develop a stable SLIVER system for precise measurements.
    • To evaluate the resolution improvement of the stabilized SLIVER system compared to direct imaging.

    Main Methods:

    • Constructed a stabilized inversion interferometer using a novel locking scheme.
    • Employed the system to measure transverse separation and intensity ratio of simulated incoherent point-like sources.
    • Utilized information theory to quantify resolution enhancement.

    Main Results:

    • Successfully stabilized the inversion interferometer, significantly improving performance.
    • Demonstrated accurate measurement of transverse separation and intensity ratio.
    • Quantified resolution improvement over direct imaging techniques.

    Conclusions:

    • The stabilized SLIVER system offers improved performance and stability.
    • This advancement paves the way for practical astronomical observation campaigns.
    • The study provides a rigorous framework for evaluating super-localization resolution.