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    Area of Science:

    • Quantum Optics
    • Quantum Information Science
    • Integrated Photonics

    Background:

    • Quantum interference and correlation are vital for quantum information applications.
    • Previous experiments were limited to 1D systems, hindering scalability.

    Purpose of the Study:

    • To experimentally observe non-classical photon correlation in a 2D photonic lattice.
    • To explore the potential for large-scale quantum simulation on integrated photonic chips.

    Main Methods:

    • Utilized a 3D femtosecond laser-written fully coupled 2D photonic lattice.
    • Performed experiments on photon interference, including Hong-Ou-Mandel interference and bunching.
    • Validated results by comparing experimental and simulated photon distributions.

    Main Results:

    • Successfully observed clear non-classical photon correlation in the 2D lattice.
    • Achieved high overlap (0.890 ± 0.001) between measured and simulated distributions.
    • Demonstrated the feasibility of integrating engineered disorder for advanced quantum control.

    Conclusions:

    • This study experimentally confirms quantum correlation in 2D photonic lattices.
    • The findings pave the way for scalable quantum simulation using integrated photonic chips.
    • The developed platform offers new possibilities for advanced quantum information processing.