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    Area of Science:

    • Quantum mechanics
    • Optics
    • Photonics

    Background:

    • Wave-particle duality is a core concept in quantum mechanics, exemplified by Bohr's complementarity principle.
    • Traditional quantum delayed-choice experiments, often using single photons, require repeated measurements and parameter adjustments.
    • Observing quantum phenomena like duality typically demands complex experimental setups and procedures.

    Purpose of the Study:

    • To simulate a quantum delayed-choice experiment in a single shot.
    • To demonstrate the trade-off between photon distinguishability and visibility.
    • To provide a simplified and robust method for observing quantum duality.

    Main Methods:

    • Utilized a classical intense light beam as input instead of single photons.
    • Employed a two-arm interferometer with a finite beam profile.
    • Captured observations using a single shot from a charged-coupled-device camera.

    Main Results:

    • Successfully simulated a quantum delayed-choice experiment in a single measurement.
    • Demonstrated the intuitive trade-off between distinguishability and visibility of photons.
    • Observed the transition between wave and particle natures of photons within a single experimental run.

    Conclusions:

    • The single-shot approach simplifies the study of quantum duality.
    • This method is robust against noise due to short exposure times.
    • It offers a new, efficient route for inspecting quantum phenomena without frequent parameter adjustments.