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Abstract <p>The specific features of the theory of resonant interactions of electromagnetic coherent fields with an anharmonic oscillator, as compared to the case of a multilevel atom, are highlighted. It is shown that within the framework of the local approach—the algebraic resonance perturbation theory—it is possible to account for the requirements of the global approach of the theory of open quantum systems. Based on the auxiliary model of the ‘‘internal nonlinearity’’ of the anharmonic oscillator, the possible conditions for the resonance of a coherent wave with an anharmonic oscillator involving the absorption of a single photon are analyzed.</p>

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Anharmonic Quantum Oscillator as a Model of Resonant Optics

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • A. M. Basharov

摘要

Abstract

The specific features of the theory of resonant interactions of electromagnetic coherent fields with an anharmonic oscillator, as compared to the case of a multilevel atom, are highlighted. It is shown that within the framework of the local approach—the algebraic resonance perturbation theory—it is possible to account for the requirements of the global approach of the theory of open quantum systems. Based on the auxiliary model of the ‘‘internal nonlinearity’’ of the anharmonic oscillator, the possible conditions for the resonance of a coherent wave with an anharmonic oscillator involving the absorption of a single photon are analyzed.