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<p>This study explores the optical and plasmonic properties of the gold/rubidium nanocomposite, wherein gold nanoparticles (AuNPs) are uniformly embedded into a coherently prepared rubidium (Rb) atomic media. This study takes into account the effects of the size, shape and volume fraction of AuNPs, and control field frequencies using localized surface plasmon resonance and atomic transitions in rubidium. Using a four-level atomic cascade configuration, this Au/Rb nanocomposite can be modeled to accurately manipulate its nonlinear optical response. The effective dielectric function of this nanocomposite is modeled to show significant tunability in the real and imaginary components through external control fields. In this study, we found that plasmonic response induced by the AuNps could give rise to the enhancement of the Au/Rb optical properties by having a very significant scope for applications in quantum photonics, plasmonic sensing, and tunable nanophotonic devices. This work highlights the powerful integration of plasmonic nanostructures with atomic systems, presenting innovative opportunities for advanced photonic technologies.</p>

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Optical and plasmonic properties of coherently prepared nanocomposite composed of gold nanoparticles embedded in rubidium atomic media

  • 期刊论文

  • 发表日期：

    2025年4月20日

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  • Aftab Khan,
  • Arif Ullah,
  • Afzal Khan

摘要

This study explores the optical and plasmonic properties of the gold/rubidium nanocomposite, wherein gold nanoparticles (AuNPs) are uniformly embedded into a coherently prepared rubidium (Rb) atomic media. This study takes into account the effects of the size, shape and volume fraction of AuNPs, and control field frequencies using localized surface plasmon resonance and atomic transitions in rubidium. Using a four-level atomic cascade configuration, this Au/Rb nanocomposite can be modeled to accurately manipulate its nonlinear optical response. The effective dielectric function of this nanocomposite is modeled to show significant tunability in the real and imaginary components through external control fields. In this study, we found that plasmonic response induced by the AuNps could give rise to the enhancement of the Au/Rb optical properties by having a very significant scope for applications in quantum photonics, plasmonic sensing, and tunable nanophotonic devices. This work highlights the powerful integration of plasmonic nanostructures with atomic systems, presenting innovative opportunities for advanced photonic technologies.