Probing different regimes of strong field light-matter interaction with semiconductor quantum dots and few cavity photons

F. Hargart; K. Roy-Choudhury; T. John; S. L.  Portalupi; C. Schneider; Sven Höfling; M. Kamp; S. Hughes; P. Michler

doi:10.1088/1367-2630/aa5198

Probing different regimes of strong field light-matter interaction with semiconductor quantum dots and few cavity photons

F. Hargart, K. Roy-Choudhury, T. John, S. L. Portalupi, C. Schneider, Sven Höfling, M. Kamp, S. Hughes, P. Michler

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Abstract

In this work we present an extensive experimental and theoretical investigation of different regimes of strong field light-matter interaction for cavity-driven
quantum dot-cavity systems. The electric field enhancement inside a high-Q micropillar cavity facilitates exceptionally strong interaction with few cavity
photons, enabling the simultaneous investigation for a wide range of QD-laser
detuning. In case of a resonant drive, the formation of dressed states and a
Mollow triplet sideband splitting of up to 45 μeV is measured for a mean cavity
photon number ⟨n_c⟩ ≤ 1. In the asymptotic limit of the linear AC Stark effect
we systematically investigate the power and detuning dependence of more than
400 QDs. Some QD-cavity systems exhibit an unexpected anomalous Stark shift,
which can be explained by an extended dressed 4-level QD model. We provide a
detailed analysis of the QD-cavity systems properties enabling this novel effect.
The experimental results are successfully reproduced using a polaron master
equation approach for the QD-cavity system, which includes the driving laser
field, exciton-cavity and exciton-phonon interactions.

Original language	English
Article number	123031
Number of pages	13
Journal	New Journal of Physics
Volume	18
DOIs	https://doi.org/10.1088/1367-2630/aa5198
Publication status	Published - 23 Dec 2016

Keywords

Quantum dots
Light-matter interaction
AC Stark effect
Dressed states

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@article{368851776f024710977332e7ef43f43a,

title = "Probing different regimes of strong field light-matter interaction with semiconductor quantum dots and few cavity photons",

abstract = "In this work we present an extensive experimental and theoretical investigation of different regimes of strong field light-matter interaction for cavity-driven quantum dot-cavity systems. The electric field enhancement inside a high-Q micropillar cavity facilitates exceptionally strong interaction with few cavity photons, enabling the simultaneous investigation for a wide range of QD-laser detuning. In case of a resonant drive, the formation of dressed states and a Mollow triplet sideband splitting of up to 45 μeV is measured for a mean cavity photon number ⟨nc⟩ ≤ 1. In the asymptotic limit of the linear AC Stark effect we systematically investigate the power and detuning dependence of more than 400 QDs. Some QD-cavity systems exhibit an unexpected anomalous Stark shift, which can be explained by an extended dressed 4-level QD model. We provide a detailed analysis of the QD-cavity systems properties enabling this novel effect. The experimental results are successfully reproduced using a polaron master equation approach for the QD-cavity system, which includes the driving laser field, exciton-cavity and exciton-phonon interactions.",

keywords = "Quantum dots, Light-matter interaction, AC Stark effect, Dressed states",

author = "F. Hargart and K. Roy-Choudhury and T. John and Portalupi, \{S. L.\} and C. Schneider and Sven H{\"o}fling and M. Kamp and S. Hughes and P. Michler",

note = "We acknowledge financial support of the Deutsche Forschungsgemeinschaft (DFG) within the SFB/TRR21 and the projects MI500/23-1 and Ka2318/4-1, the Natural Sciences and Engineering Research Council of Canada, and from the open access fund of the University of Stuttgart.",

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doi = "10.1088/1367-2630/aa5198",

language = "English",

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journal = "New Journal of Physics",

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TY - JOUR

T1 - Probing different regimes of strong field light-matter interaction with semiconductor quantum dots and few cavity photons

AU - Hargart, F.

AU - Roy-Choudhury, K.

AU - John, T.

AU - Portalupi, S. L.

AU - Schneider, C.

AU - Höfling, Sven

AU - Kamp, M.

AU - Hughes, S.

AU - Michler, P.

N1 - We acknowledge financial support of the Deutsche Forschungsgemeinschaft (DFG) within the SFB/TRR21 and the projects MI500/23-1 and Ka2318/4-1, the Natural Sciences and Engineering Research Council of Canada, and from the open access fund of the University of Stuttgart.

PY - 2016/12/23

Y1 - 2016/12/23

N2 - In this work we present an extensive experimental and theoretical investigation of different regimes of strong field light-matter interaction for cavity-driven quantum dot-cavity systems. The electric field enhancement inside a high-Q micropillar cavity facilitates exceptionally strong interaction with few cavity photons, enabling the simultaneous investigation for a wide range of QD-laser detuning. In case of a resonant drive, the formation of dressed states and a Mollow triplet sideband splitting of up to 45 μeV is measured for a mean cavity photon number ⟨nc⟩ ≤ 1. In the asymptotic limit of the linear AC Stark effect we systematically investigate the power and detuning dependence of more than 400 QDs. Some QD-cavity systems exhibit an unexpected anomalous Stark shift, which can be explained by an extended dressed 4-level QD model. We provide a detailed analysis of the QD-cavity systems properties enabling this novel effect. The experimental results are successfully reproduced using a polaron master equation approach for the QD-cavity system, which includes the driving laser field, exciton-cavity and exciton-phonon interactions.

AB - In this work we present an extensive experimental and theoretical investigation of different regimes of strong field light-matter interaction for cavity-driven quantum dot-cavity systems. The electric field enhancement inside a high-Q micropillar cavity facilitates exceptionally strong interaction with few cavity photons, enabling the simultaneous investigation for a wide range of QD-laser detuning. In case of a resonant drive, the formation of dressed states and a Mollow triplet sideband splitting of up to 45 μeV is measured for a mean cavity photon number ⟨nc⟩ ≤ 1. In the asymptotic limit of the linear AC Stark effect we systematically investigate the power and detuning dependence of more than 400 QDs. Some QD-cavity systems exhibit an unexpected anomalous Stark shift, which can be explained by an extended dressed 4-level QD model. We provide a detailed analysis of the QD-cavity systems properties enabling this novel effect. The experimental results are successfully reproduced using a polaron master equation approach for the QD-cavity system, which includes the driving laser field, exciton-cavity and exciton-phonon interactions.

KW - Quantum dots

KW - Light-matter interaction

KW - AC Stark effect

KW - Dressed states

UR - https://www.scopus.com/pages/publications/85007593512

U2 - 10.1088/1367-2630/aa5198

DO - 10.1088/1367-2630/aa5198

M3 - Article

SN - 1367-2630

VL - 18

JO - New Journal of Physics

JF - New Journal of Physics

M1 - 123031

ER -

Probing different regimes of strong field light-matter interaction with semiconductor quantum dots and few cavity photons

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