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Title: Strongly modified four-wave mixing in a coupled semiconductor quantum dot-metal nanoparticle system

We study the four-wave mixing effect in a coupled semiconductor quantum dot-spherical metal nanoparticle structure. Depending on the values of the pump field intensity and frequency, we find that there is a critical distance that changes the form of the spectrum. Above this distance, the four-wave mixing spectrum shows an ordinary three-peaked form and the effect of controlling its magnitude by changing the interparticle distance can be obtained. Below this critical distance, the four-wave mixing spectrum becomes single-peaked; and as the interparticle distance decreases, the spectrum is strongly suppressed. The behavior of the system is explained using the effective Rabi frequency that creates plasmonic metaresonances in the hybrid structure. In addition, the behavior of the effective Rabi frequency is explained via an analytical solution of the density matrix equations.
Authors:
 [1] ;  [1] ;  [2] ; ;  [3]
  1. Materials Science Department, School of Natural Sciences, University of Patras, 265 04 Patras (Greece)
  2. (Greece)
  3. Department of Physics, School of Natural Sciences, University of Patras, 265 04 Patras (Greece)
Publication Date:
OSTI Identifier:
22277991
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 8; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ANALYTICAL SOLUTION; DENSITY MATRIX; FREQUENCY MIXING; METALS; PLASMONS; QUANTUM DOTS; RESONANCE; SEMICONDUCTOR MATERIALS; SPHERICAL CONFIGURATION