Quantum-dot excitons in nanostructured environments

Jørn Märcher Hvam; Søren Stobbe; Peter Lodahl

doi:10.1002/pssb.201000634

Quantum-dot excitons in nanostructured environments

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The interaction between light and quantum-dot (QD) excitons is strongly influenced by the environment in which the QD is placed. We have investigated the interaction by measuring the time-resolved spontaneous-emission rate of QD excitons in different nanostructured environments. Thereby, we have determined the oscillator strength, quantum efficiency and spin-flip rates of QD excitons as well as their dependencies on emission wavelength and QD size. Enhancement and inhibition of QD spontaneous emission in photonic crystal membranes (PCMs) is observed. Efficient coupling to PCM waveguides is demonstrated and the influence of disorder is discussed. The findings have a strong bearing on future nanophotonic devices.

Original language	English
Journal	IPPS physica status solidi (b)
Volume	248
Issue number	2
Pages (from-to)	375-383
ISSN	0370-1972
DOIs	https://doi.org/10.1002/pssb.201000634
Publication status	Published - 2011

Keywords

Spin-flip
Quantum-dot excitons
Photonic crystals
Oscillator strength

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title = "Quantum-dot excitons in nanostructured environments",

abstract = "The interaction between light and quantum-dot (QD) excitons is strongly influenced by the environment in which the QD is placed. We have investigated the interaction by measuring the time-resolved spontaneous-emission rate of QD excitons in different nanostructured environments. Thereby, we have determined the oscillator strength, quantum efficiency and spin-flip rates of QD excitons as well as their dependencies on emission wavelength and QD size. Enhancement and inhibition of QD spontaneous emission in photonic crystal membranes (PCMs) is observed. Efficient coupling to PCM waveguides is demonstrated and the influence of disorder is discussed. The findings have a strong bearing on future nanophotonic devices.",

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year = "2011",

doi = "10.1002/pssb.201000634",

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TY - JOUR

T1 - Quantum-dot excitons in nanostructured environments

AU - Hvam, Jørn Märcher

AU - Stobbe, Søren

AU - Lodahl, Peter

PY - 2011

Y1 - 2011

N2 - The interaction between light and quantum-dot (QD) excitons is strongly influenced by the environment in which the QD is placed. We have investigated the interaction by measuring the time-resolved spontaneous-emission rate of QD excitons in different nanostructured environments. Thereby, we have determined the oscillator strength, quantum efficiency and spin-flip rates of QD excitons as well as their dependencies on emission wavelength and QD size. Enhancement and inhibition of QD spontaneous emission in photonic crystal membranes (PCMs) is observed. Efficient coupling to PCM waveguides is demonstrated and the influence of disorder is discussed. The findings have a strong bearing on future nanophotonic devices.

AB - The interaction between light and quantum-dot (QD) excitons is strongly influenced by the environment in which the QD is placed. We have investigated the interaction by measuring the time-resolved spontaneous-emission rate of QD excitons in different nanostructured environments. Thereby, we have determined the oscillator strength, quantum efficiency and spin-flip rates of QD excitons as well as their dependencies on emission wavelength and QD size. Enhancement and inhibition of QD spontaneous emission in photonic crystal membranes (PCMs) is observed. Efficient coupling to PCM waveguides is demonstrated and the influence of disorder is discussed. The findings have a strong bearing on future nanophotonic devices.

KW - Spin-flip

KW - Quantum-dot excitons

KW - Photonic crystals

KW - Oscillator strength

U2 - 10.1002/pssb.201000634

DO - 10.1002/pssb.201000634

M3 - Journal article

SN - 0370-1972

VL - 248

SP - 375

EP - 383

JO - IPPS physica status solidi (b)

JF - IPPS physica status solidi (b)

IS - 2

ER -

Quantum-dot excitons in nanostructured environments

Abstract

Keywords

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