The use of plasmonic nanoparticles is one of the effective methods for controlling the spontaneous emission of a quantum emitter. In this paper, a plasmonic nanoparticle has been used to investigate the contribution of radiative and non-radiative decay in the spontaneous emission of the quantum emitter. To this end, a quantum emitter has been considered in the vicinity of a silver nanoparticle and by using the coupled dipole approximation method, spontaneous emission, contribution of radiative and non-radiative decay variations of the quantum emitter, in terms of wavelength and distance from the nanoparticle, have been investigated. The obtained results show that with the increase in the nanoparticle diameter and reduction in the spacing of the nanoparticle from the quantum emitter, the maximum spontaneous emission and contribution of radiative decay are increased.

Keywords: Coupled dipole approximation, Plasmonic nanoparticle, Quantum emitter, Radiative and non-radiative decay, Spontaneous emission

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