Dynamics of excitons in individual InAs quantum dots revealed in four-wave mixing spectroscopy

Q. Mermillod; D. Wigger; V. Delmonte; D. E. Reiter; C. Schneider; M. Kamp; Sven Höfling; W. Langbein; T. Kuhn; G. Nogues; J. Kasprzak

doi:10.1364/OPTICA.3.000377

Dynamics of excitons in individual InAs quantum dots revealed in four-wave mixing spectroscopy

Q. Mermillod, D. Wigger, V. Delmonte, D. E. Reiter, C. Schneider, M. Kamp, Sven Höfling, W. Langbein, T. Kuhn, G. Nogues, J. Kasprzak

Research output: Contribution to journal › Article › peer-review

Abstract

A detailed understanding of the population and coherence dynamics in optically driven individual emitters in solids and their signatures in ultrafast nonlinear-optical signals is of prime importance for their applications in future quantum and optical technologies. In a combined experimental and theoretical study on exciton complexes in single semiconductor quantum dots we reveal a detailed picture of the dynamics employing three-beam polarization-resolved four-wave mixing (FWM) micro-spectroscopy. The oscillatory dynamics of the FWM signals in the exciton-biexciton system is governed by the fine-structure splitting and the biexciton binding energy in an excellent quantitative agreement between measurement and analytical description. The analysis of the excitation conditions exhibits a dependence of the dynamics on the specific choice of polarization configuration, pulse areas and temporal ordering of driving fields. The interplay between the transitions in the four-level exciton system leads to rich evolution of coherence and population. Using two-dimensional FWM spectroscopy we elucidate the exciton-biexciton coupling and identify neutral and charged exciton complexes in a single quantum dot. Our investigations thus clearly reveal that FWM spectroscopy is a powerful tool to characterize spectral and dynamical properties of single quantum structures.

Original language	English
Pages (from-to)	377-384
Journal	Optica
Volume	3
Issue number	4
Early online date	1 Apr 2016
DOIs	https://doi.org/10.1364/OPTICA.3.000377
Publication status	Published - 20 Apr 2016

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@article{a4f88fe30f0046f2a1812f2e50dacfae,

title = "Dynamics of excitons in individual InAs quantum dots revealed in four-wave mixing spectroscopy",

abstract = "A detailed understanding of the population and coherence dynamics in optically driven individual emitters in solids and their signatures in ultrafast nonlinear-optical signals is of prime importance for their applications in future quantum and optical technologies. In a combined experimental and theoretical study on exciton complexes in single semiconductor quantum dots we reveal a detailed picture of the dynamics employing three-beam polarization-resolved four-wave mixing (FWM) micro-spectroscopy. The oscillatory dynamics of the FWM signals in the exciton-biexciton system is governed by the fine-structure splitting and the biexciton binding energy in an excellent quantitative agreement between measurement and analytical description. The analysis of the excitation conditions exhibits a dependence of the dynamics on the specific choice of polarization configuration, pulse areas and temporal ordering of driving fields. The interplay between the transitions in the four-level exciton system leads to rich evolution of coherence and population. Using two-dimensional FWM spectroscopy we elucidate the exciton-biexciton coupling and identify neutral and charged exciton complexes in a single quantum dot. Our investigations thus clearly reveal that FWM spectroscopy is a powerful tool to characterize spectral and dynamical properties of single quantum structures.",

author = "Q. Mermillod and D. Wigger and V. Delmonte and Reiter, {D. E.} and C. Schneider and M. Kamp and Sven H{\"o}fling and W. Langbein and T. Kuhn and G. Nogues and J. Kasprzak",

note = "We acknowledge the support by the ERC Starting Grant PICSEN, contract no. 306387. D.E.R. is grateful for financial support from the DAAD within the P.R.I.M.E. program.",

year = "2016",

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doi = "10.1364/OPTICA.3.000377",

language = "English",

volume = "3",

pages = "377--384",

journal = "Optica",

issn = "2334-2536",

publisher = "OPTICAL SOC AMER",

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T1 - Dynamics of excitons in individual InAs quantum dots revealed in four-wave mixing spectroscopy

AU - Mermillod, Q.

AU - Wigger, D.

AU - Delmonte, V.

AU - Reiter, D. E.

AU - Schneider, C.

AU - Kamp, M.

AU - Höfling, Sven

AU - Langbein, W.

AU - Kuhn, T.

AU - Nogues, G.

AU - Kasprzak, J.

N1 - We acknowledge the support by the ERC Starting Grant PICSEN, contract no. 306387. D.E.R. is grateful for financial support from the DAAD within the P.R.I.M.E. program.

PY - 2016/4/20

Y1 - 2016/4/20

N2 - A detailed understanding of the population and coherence dynamics in optically driven individual emitters in solids and their signatures in ultrafast nonlinear-optical signals is of prime importance for their applications in future quantum and optical technologies. In a combined experimental and theoretical study on exciton complexes in single semiconductor quantum dots we reveal a detailed picture of the dynamics employing three-beam polarization-resolved four-wave mixing (FWM) micro-spectroscopy. The oscillatory dynamics of the FWM signals in the exciton-biexciton system is governed by the fine-structure splitting and the biexciton binding energy in an excellent quantitative agreement between measurement and analytical description. The analysis of the excitation conditions exhibits a dependence of the dynamics on the specific choice of polarization configuration, pulse areas and temporal ordering of driving fields. The interplay between the transitions in the four-level exciton system leads to rich evolution of coherence and population. Using two-dimensional FWM spectroscopy we elucidate the exciton-biexciton coupling and identify neutral and charged exciton complexes in a single quantum dot. Our investigations thus clearly reveal that FWM spectroscopy is a powerful tool to characterize spectral and dynamical properties of single quantum structures.

AB - A detailed understanding of the population and coherence dynamics in optically driven individual emitters in solids and their signatures in ultrafast nonlinear-optical signals is of prime importance for their applications in future quantum and optical technologies. In a combined experimental and theoretical study on exciton complexes in single semiconductor quantum dots we reveal a detailed picture of the dynamics employing three-beam polarization-resolved four-wave mixing (FWM) micro-spectroscopy. The oscillatory dynamics of the FWM signals in the exciton-biexciton system is governed by the fine-structure splitting and the biexciton binding energy in an excellent quantitative agreement between measurement and analytical description. The analysis of the excitation conditions exhibits a dependence of the dynamics on the specific choice of polarization configuration, pulse areas and temporal ordering of driving fields. The interplay between the transitions in the four-level exciton system leads to rich evolution of coherence and population. Using two-dimensional FWM spectroscopy we elucidate the exciton-biexciton coupling and identify neutral and charged exciton complexes in a single quantum dot. Our investigations thus clearly reveal that FWM spectroscopy is a powerful tool to characterize spectral and dynamical properties of single quantum structures.

U2 - 10.1364/OPTICA.3.000377

DO - 10.1364/OPTICA.3.000377

M3 - Article

SN - 2334-2536

VL - 3

SP - 377

EP - 384

JO - Optica

JF - Optica

IS - 4

ER -

Dynamics of excitons in individual InAs quantum dots revealed in four-wave mixing spectroscopy

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