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Hole-spin pumping and repumping in a p-type δ-doped InAs quantum dot (2014)

Konstantinos G. Lagoudakis, Kevin A. Fischer, Tomas Sarmiento, Kai Mueller, and Jelena Vučković

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2014-09-16

Description: Author(s): Konstantinos G. Lagoudakis, Kevin A. Fischer, Tomas Sarmiento, Kai Mueller, and Jelena Vučković We have grown high quality p-type δ-doped InAs quantum dots and have demonstrated coherent spin pumping and repumping of a hole spin in a positively charged quantum dot by means of a single-laser driving scheme under a high magnetic field in the Voigt configuration. Modeling of our system shows exce... [Phys. Rev. B 90, 121402] Published Mon Sep 15, 2014

Keywords: Surface physics, nanoscale physics, low-dimensional systems

Print ISSN: 1098-0121

Electronic ISSN: 1095-3795

Topics: Physics

Published by American Physical Society (APS)

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Optical near-field interference in the excitation of a bowtie nanoantenna (2011)

P. Melchior, D. Bayer, C. Schneider, A. Fischer, M. Rohmer, W. Pfeiffer, and M. Aeschlimann

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2011-06-09

Description: Author(s): P. Melchior, D. Bayer, C. Schneider, A. Fischer, M. Rohmer, W. Pfeiffer, and M. Aeschlimann We show experimentally as well as in simulation that the phase-sensitive superposition of different plasmonic modes leads to a spatially controllable enhancement of the near-field inside and in the vicinity of a metallic nanostructure. Multiphoton photoemission electron microscopy maps the local nea... [Phys. Rev. B 83, 235407] Published Wed Jun 08, 2011

Keywords: Surface physics, nanoscale physics, low-dimensional systems

Print ISSN: 1098-0121

Electronic ISSN: 1095-3795

Topics: Physics

Published by American Physical Society (APS)

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Dissipative preparation of the exciton and biexciton in self-assembled quantum dots on picosecond time scales (2014)

Per-Lennart Ardelt, Lukas Hanschke, Kevin A. Fischer, Kai Müller, Alexander Kleinkauf, Manuel Koller, Alexander Bechtold, Tobias Simmet, Jakob Wierzbowski, Hubert Riedl, Gerhard Abstreiter, and Jonathan J. Finley

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2014-12-03

Description: Author(s): Per-Lennart Ardelt, Lukas Hanschke, Kevin A. Fischer, Kai Müller, Alexander Kleinkauf, Manuel Koller, Alexander Bechtold, Tobias Simmet, Jakob Wierzbowski, Hubert Riedl, Gerhard Abstreiter, and Jonathan J. Finley Pulsed resonant fluorescence is used to probe ultrafast phonon-assisted exciton and biexciton preparation in individual self-assembled InGaAs quantum dots. By driving the system using large area (≥10π) near resonant optical pulses, we experimentally demonstrate how phonon-mediated dissipation within... [Phys. Rev. B 90, 241404] Published Tue Dec 02, 2014

Keywords: Surface physics, nanoscale physics, low-dimensional systems

Print ISSN: 1098-0121

Electronic ISSN: 1095-3795

Topics: Physics

Published by American Physical Society (APS)

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