Article abstract
Nature Photonics 2, 688 - 692 (2008)
Published online: 5 October 2008 | doi:10.1038/nphoton.2008.202
Subject Category: Novel materials and engineered structures
Coupling of quantum-dot light emission with a three-dimensional photonic-crystal nanocavity
Kanna Aoki1,2,4, Denis Guimard1,2, Masao Nishioka1, Masahiro Nomura1,2, Satoshi Iwamoto1,2,3 & Yasuhiko Arakawa1,2,3
Abstract
We report on the first demonstration of the coupling of fully confined electrons and photons using a combination of three-dimensional photonic crystal nanocavities and quantum dots. The three dimensional photonic crystals were assembled by stacking planar components using a sophisticated micromanipulation technique. Point defects, containing embedded quantum dots, were introduced into the photonic crystals as active sites. By measuring the photoluminescence spectra of the assembly, the process by which light emitted from the quantum dots is coupled to the defect modes of a three dimensional photonic crystal was demonstrated for the first time. The characteristics of the sharp emission peaks agreed well with numerical simulations, and these were confirmed to be resonant modes by polarization measurements. The highest quality factor (Q-factor) for three dimensional photonic crystals (2,300) was achieved.
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505, Japan
- Institute for Nano Quantum Information Electronics, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505, Japan
- Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8904, Japan
- Present address: National Nanotechnology Laboratory, CNR/INFM, Università del Salento, 16 Via Arnesano, Lecce 73100, Italy
Correspondence to: Kanna Aoki1,2,4 e-mail: kanna@iis.u-tokyo.ac.jp
Correspondence to: Yasuhiko Arakawa1,2,3 e-mail: arakawa@iis.u-tokyo.ac.jp
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