RT Journal Article
T1 Resonance fluorescence spectrum of a p-doped quantum dot coupled to a metallic nanoparticle
A1 Carreño Sánchez, Fernando
A1 Antón Revilla, Miguel Ángel
A1 Arrieta Yáñez, Francisco
AB The resonance fluorescence spectrum (RFS) of a hybrid system consisting of a p-doped semiconductor quantum dot (QD) coupled to a metallic nanoparticle (MNP) is analyzed. The quantum dot is described as a four-level atomlike system using the density matrix formalism. The lower levels are Zeeman-split hole spin states and the upper levels correspond to positively charged excitons containing a spin-up, spin-down hole pair and a spin electron. A linearly polarized laser field drives two of the optical transitions of the QD and produces localized surface plasmons in the nanoparticle, which act back upon the QD. The frequencies of these localized plasmons are very different along the two principal axes of the nanoparticle, thus producing an anisotropic modification of the spontaneous emission rates of the allowed optical transitions, which is accompanied by very minor local field corrections. This manifests into dramatic modifications in the RFS of the hybrid system in contrast to the one obtained for the isolated QD. The RFS is analyzed as a function of the nanoparticle's aspect ratio, the external magnetic field applied in the Voigt geometry, and the Rabi frequency of the driving field. It is shown that the spin of the QD is imprinted onto certain sidebands of the RFS, and that the signal at these sidebands can be optimized by engineering the shape of the MNP.
PB American Physical Society
SN 1098-0121
YR 2013
FD 2013-11-08
LK https://hdl.handle.net/20.500.14352/34723
UL https://hdl.handle.net/20.500.14352/34723
LA eng
NO Este documento es un preprint de la versión publicada
NO Ministerio de Ciencia e Innovacion (MCINN)
DS Docta Complutense
RD 8 jun 2025