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    This study introduces a novel wavefront sensor combining weak measurement and compressive sensing. It achieves high-resolution wavefront imaging with exceptional sensitivity using a spatial light modulator and photon-counting detectors.

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    Area of Science:

    • Optics and Photonics
    • Quantum Metrology

    Background:

    • Wavefront sensing is crucial for optical system characterization and aberration correction.
    • Traditional methods often face limitations in resolution, sensitivity, or complexity.

    Purpose of the Study:

    • To develop a novel wavefront sensor integrating weak measurement and compressive sensing.
    • To achieve high-resolution wavefront reconstruction with enhanced sensitivity.

    Main Methods:

    • Utilized a high-resolution spatial light modulator (SLM) as a variable waveplate.
    • Weakly coupled optical field's transverse-position and polarization using the SLM.
    • Employed random binary patterns on the SLM for measuring wavefront projections.
    • Applied compressive-sensing optimization techniques for wavefront recovery.

    Main Results:

    • Successfully reconstructed high-quality, 256 × 256 pixel wavefront images.
    • Achieved wavefront recovery from a limited number of projections (10,000).
    • Demonstrated sub-picowatt sensitivity using photon-counting detectors.

    Conclusions:

    • The integrated approach offers a powerful new method for wavefront sensing.
    • This technique enables high-resolution imaging with unprecedented sensitivity.
    • Potential applications in adaptive optics, microscopy, and optical testing.