What are the effects of plasmon coupling in increasing the output quantum in quantum dots?

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Len Leonid Mizrah

Dear Alaa М. H. Al-alwani

Information below should be helpful:

Plasmon coupling can significantly enhance the output quantum efficiency of quantum dots (QDs) through several mechanisms:

Enhanced Radiative Rate: In the weak coupling regime, plasmonic cavities can enhance the radiative rate of quantum dots. This is due to the Purcell effect, where the presence of a plasmonic cavity increases the spontaneous emission rate of the QDs.

Energy Transfer: Plasmon coupling facilitates efficient energy transfer between quantum dots and plasmonic structures. This can lead to increased photoluminescence and improved quantum yield.

Strong Coupling Regime: In the strong coupling regime, the interaction between QD excitons and surface plasmons can lead to the formation of hybrid states. These coupled states can result in unique optical properties, such as vacuum Rabi splitting, which can further enhance the output quantum efficiency.

Localized Surface Plasmons (LSPs): The confinement of light at the nanoscale by LSPs can create highly localized electromagnetic fields. This enhances the interaction between light and QDs, leading to increased emission intensity and efficiency.

Spectral Tuning: Plasmon coupling allows for the tuning of the emission spectrum of QDs. By adjusting the plasmonic environment, the emission wavelength and intensity of QDs can be controlled, optimizing their performance for specific applications.

These effects make plasmon coupling a powerful tool for enhancing the performance of quantum dots in various applications, including sensing, imaging, and quantum information technology.

Quantum dot plasmonics: from weak to strong coupling

Ora Bitton , Satyendra Nath Gupta and Gilad Haran

From the journal Nanophotonics

https://doi.org/10.1515/nanoph-2018-0218

A. М. H. Hussein

Thanks, Dr.Len Leonid Mizrak the answer 🌺🌺🌺