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    Area of Science:

    • Quantum Information Science
    • Integrated Optics
    • Nonlinear Optics

    Background:

    • Microresonators are crucial for integrated optical quantum information technologies.
    • High-quality (Q) factor microresonators enhance intracavity fields for efficient photon-pair generation.
    • Photon-pair generation rate (PGR) scales with the cubic power of the Q factor, but high Q limits repetition rates due to longer photon lifetimes.

    Purpose of the Study:

    • To overcome the trade-off between photon-pair generation rate and repetition rate in microresonators.
    • To enhance the maximum achievable photon repetition rate without sacrificing power efficiency.
    • To enable more efficient and robust quantum information processing.

    Main Methods:

    • Proposing a novel method using resonance linewidth-manipulated microresonators.
    • Leveraging a combination of low and high-Q resonances within a single resonator.
    • Manipulating microresonator properties to optimize photon generation and extraction.

    Main Results:

    • Achieved improved maximum photon repetition rates while maintaining power efficiency.
    • Demonstrated a method to balance photon-pair generation rate and repetition rate.
    • Overcame the Fourier-transform limit on photon repetition rate.

    Conclusions:

    • The proposed method offers a pathway to significantly enhance photon-pair generation for quantum technologies.
    • Resonance linewidth manipulation in microresonators is key to optimizing quantum light source performance.
    • This approach provides a balanced solution for high-performance integrated quantum photon sources.