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Correlations in pulsed resonance fluorescence.

K Konthasinghe, M Peiris, B Petrak

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    This summary is machine-generated.

    We studied light scattered by quantum dots using pulsed lasers. We observed distinct Rabi oscillations in coherent and incoherent light, impacting entanglement schemes.

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    Area of Science:

    • Quantum optics
    • Solid-state physics

    Background:

    • Quantum dots are semiconductor nanocrystals with tunable optical properties.
    • Frequency combs offer precise, pulsed laser excitation for quantum systems.

    Purpose of the Study:

    • Investigate light scattering correlations from quantum dots under frequency comb excitation.
    • Analyze the spectral and temporal dynamics of pulsed resonance fluorescence.
    • Differentiate coherent and incoherent scattering components.

    Main Methods:

    • Near-resonant excitation of quantum dots using a frequency comb.
    • Measurement of first and second-order photon correlations.
    • Theoretical modeling of quantum dot fluorescence spectra.

    Main Results:

    • Pulsed excitation yields a fluorescence spectrum with multiple sidebands, unlike monochromatic excitation.
    • Rabi oscillations were observed in both coherent and incoherent scattered light.
    • Each scattering component exhibited distinct, pulse-area-dependent phase evolution.

    Conclusions:

    • The observed phenomena are theoretically reproducible.
    • Understanding these dynamics is crucial for quantum information processing.
    • Findings may advance remote entanglement generation using pulsed two-photon interference.