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Plasmonic effects in excitonic population transfer in a driven semiconductor–metal nanoparticle hybrid system

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Antón Revilla, Miguel Ángel and Carreño Sánchez, Fernando and Melle Hernández, Sonia and Calderón, Oscar Gómez and Cabrera Granado, Eduardo and Cox, Joel and Singh, Mahi R. (2012) Plasmonic effects in excitonic population transfer in a driven semiconductor–metal nanoparticle hybrid system. Physical review B, 86 . p. 155305. ISSN 1098-0121

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Official URL: https://doi.org/10.1103/PhysRevB.86.155305




Abstract

We have investigated the coherent transfer of excitonic populations in a semiconductor quantum dot (SQD) modulated by the surface plasmon of a metallic nanoparticle (MNP). The SQD is considered as a three-level V-type atomic system. We applied a transform-limited laser pulse field resonant with the upper atomic levels of the SQD. When the SQD is close enough to the MNP, the otherwise equally populated atomic levels can be selectively excited. Selectivity population can be achieved by two physical mechanisms: an enhancement of the Rabi frequencies that drive the optical transitions, which depends on the polarization arrangement, and a frequency shift of the optical transitions that leads to a dynamical detuning.


Item Type:Article
Uncontrolled Keywords:Optical propierties ; Nanoparticles ; Plasmonic effects ; SQD ; Quantum systems
Subjects:Sciences > Physics > Optics
Sciences > Physics > Particles
Medical sciences > Optics > Optical materials
ID Code:42049
Deposited On:03 Apr 2017 12:41
Last Modified:04 Apr 2017 08:15

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