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    This study refines theoretical models for quantum imaging by correcting an erroneous approach for photon loss. The enhanced model accurately describes experimental results using coincidence counting for object detection and reflectivity estimation.

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    Area of Science:

    • Quantum optics
    • Quantum information science
    • Photonics

    Background:

    • Coincidence counting is vital for isolating entangled photon pairs in quantum experiments, especially with photon loss.
    • Previous theoretical models for photon loss in quantum imaging experiments had limitations.

    Purpose of the Study:

    • To address a critique of a previously used theoretical model for photon loss.
    • To present a corrected and comprehensive theoretical framework for quantum imaging experiments.

    Main Methods:

    • Utilizing complete Kraus operators to model quantum system dynamics under photon loss.
    • Extending the theoretical approach to accurately capture experimental constructs and measurable quantities.

    Main Results:

    • The corrected model accurately describes experimental results, including object presence detection and reflectivity estimation.
    • The erroneous second approach using Kraus-like operator M is identified as redundant.

    Conclusions:

    • The refined theoretical model provides a more accurate and complete description of quantum imaging experiments with photon loss.
    • This work enhances the understanding and application of coincidence counting in quantum optical measurements.