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Plasmonic electromagnetically induced transparency in metallic nanoparticle-quantum dot hybrid systems
Ali Hatef1, Seyed M Sadeghi, Mahi R Singh
1Department of Physics and Astronomy, University of Western Ontario, London, Ontario, Canada.
Nanotechnology
|January 18, 2012
Summary
We demonstrate how photonic crystals can tune energy absorption in hybrid quantum dot-metallic nanoparticle systems. This control over excitonic-induced transparencies offers new possibilities for optical applications.
Area of Science:
- Optics and Photonics
- Materials Science
- Quantum Mechanics
Background:
- Hybrid systems combining quantum dots and metallic nanoparticles offer unique optical properties.
- Photonic crystals provide a platform for controlling light-matter interactions at the nanoscale.
Purpose of the Study:
- To investigate the energy absorption rate in a hybrid semiconductor quantum dot-metallic nanoparticle system embedded within a photonic crystal.
- To explore the influence of a photonic crystal on excitonic-induced transparencies in the system's absorption spectrum.
Main Methods:
- Modeling a three-level V-configuration quantum dot system interacting with probe and control fields.
- Analyzing the energy absorption spectrum of the metallic nanoparticle coupled to the quantum dot.
- Simulating the system's response with and without the presence of a photonic crystal.
Main Results:
- In the absence of a photonic crystal, the system exhibits three excitonic-induced transparencies in the energy absorption spectrum.
- The photonic crystal enables manipulation of the frequencies of these excitonic-induced transparencies.
- The photonic crystal also allows for control over the amplitude of the energy absorption rate.
Conclusions:
- Photonic crystals offer a powerful tool for tailoring the optical absorption properties of hybrid quantum dot-metallic nanoparticle systems.
- The findings suggest potential for designing novel optical devices with tunable absorption characteristics.
