Open AccessFano resonance induced fast to slow light in a hybrid semiconductor quantum dot and metal nanoparticle system
Author(s) -
Hua-Jun Chen
Publication year - 2020
Publication title -
laser physics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.59
H-Index - 72
eISSN - 1612-202X
pISSN - 1612-2011
DOI - 10.1088/1612-202x/ab60ac
Subject(s) - slow light , electromagnetically induced transparency , fano resonance , quantum dot , fano plane , absorption (acoustics) , materials science , resonance (particle physics) , plasmon , dispersion (optics) , optoelectronics , spectral line , semiconductor , molecular physics , physics , optics , atomic physics , photonic crystal , quantum mechanics , mathematics , pure mathematics
We theoretically demonstrate the Fano resonance and the conversion from fast to slow light in a hybrid semiconductor quantum dot (SQDs)-metal nanoparticle (MNPs) with cavity quantum electrodynamics treatment. The absorption spectra of the weak probe field exhibit a series of asymmetric Fano line shapes and their related optical propagation properties, such as fast and slow light effects, are investigated based on the hybrid system for suitable parametric regimes. Further, the transparency windows (i.e. the absorption dip approaches zero) in the probe absorption spectra are accompanied by the rapid steep dispersion of the Fano resonance profile, which promises the slow or fast light effect, and even tunable fast-to-slow light propagation (or vice versa) can be achieved by controlling different parameter regimes. Therefore the investigation may indicate promising applications in quantum information processing based on the hybrid SQD-MNP system.