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<p>We address the contributions of cross-correlation functions to the resonance fluorescence spectrum of a three-level Ξ-system subjected to resonant bichromatic excitation. These contributions involve the sequential emission of two photons from each of the excited transitions. The cross-correlation functions demonstrate mutual coherence of the emitted frequency separated fields. The contribution to the scattered radiation in the presence of non-stationary processes is also considered. It is shown that the processes contributing to the cross-correlation determine the photon bunching for both excited transitions.</p>

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Cross-Correlations in the Process of Inelastic Scattering of Bichromatic Light on a Ξ System

  • 期刊论文

  • 发表日期：

    2025年11月1日

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  • Ya. T. Shneidman,
  • S. A. Gunin,
  • A. Yu. Dmitriev,
  • G. P. Fedorov,
  • O. V. Astafiev

摘要

We address the contributions of cross-correlation functions to the resonance fluorescence spectrum of a three-level Ξ-system subjected to resonant bichromatic excitation. These contributions involve the sequential emission of two photons from each of the excited transitions. The cross-correlation functions demonstrate mutual coherence of the emitted frequency separated fields. The contribution to the scattered radiation in the presence of non-stationary processes is also considered. It is shown that the processes contributing to the cross-correlation determine the photon bunching for both excited transitions.