Quantum-dot-induced transparency in a nanoscale plasmonic resonator

Date

2010-10-26

Department

Program

Citation of Original Publication

Wu, Xiaohua, Stephen K. Gray, and Matthew Pelton. “Quantum-Dot-Induced Transparency in a Nanoscale Plasmonic Resonator.” Optics Express 18, no. 23 (November 8, 2010): 23633–45. https://doi.org/10.1364/OE.18.023633.

Rights

This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
Public Domain Mark 1.0

Subjects

Abstract

We investigate the near-field optical coupling between a single semiconductor nanocrystal (quantum dot) and a nanometer-scale plasmonic metal resonator using rigorous electrodynamic simulations. Our calculations show that the quantum dot produces a dip in both the extinction and scattering spectra of the surface-plasmon resonator, with a particularly strong change for the scattering spectrum. A phenomenological coupled-oscillator model is used to fit the calculation results and provide physical insight, revealing the roles of Fano interference and hybridization. The results indicate that it is possible to achieve nearly complete transparency as well as enter the strong-coupling regime for a single quantum dot in the near field of a metal nanostructure.