Optical control of energy-level structure of few electrons in AlGaAs/GaAs quantum dots

Sokratis Kalliakos; Vittorio Pellegrini; Cesar Pascual Garcia; Aron Pinczuk; Loren N. Pfeiffer; Ken W. West

doi:10.1021/nl072904p

Optical control of energy-level structure of few electrons in AlGaAs/GaAs quantum dots

Sokratis Kalliakos, Vittorio Pellegrini, Cesar Pascual Garcia, Aron Pinczuk, Loren N. Pfeiffer, Ken W. West

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

5 Scopus citations

Abstract

Optical control of the lateral quantum confinement and number of electrons confined in nanofabricated GaAs/AlGaAs quantum dots is achieved by illumination with a weak laser beam that is absorbed in the AlGaAs barrier. Precise tuning of energy-level structure and electron population is demonstrated by monitoring the low-lying transitions of the electrons from the lowest quantum-dot energy shells by resonant inelastic light scattering. These findings open the way to the manipulation of single electrons in these quantum dots without the need of external metallic gates.

Original language	English (US)
Pages (from-to)	577-581
Number of pages	5
Journal	Nano Letters
Volume	8
Issue number	2
DOIs	https://doi.org/10.1021/nl072904p
State	Published - Feb 2008
Externally published	Yes

All Science Journal Classification (ASJC) codes

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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10.1021/nl072904p

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title = "Optical control of energy-level structure of few electrons in AlGaAs/GaAs quantum dots",

abstract = "Optical control of the lateral quantum confinement and number of electrons confined in nanofabricated GaAs/AlGaAs quantum dots is achieved by illumination with a weak laser beam that is absorbed in the AlGaAs barrier. Precise tuning of energy-level structure and electron population is demonstrated by monitoring the low-lying transitions of the electrons from the lowest quantum-dot energy shells by resonant inelastic light scattering. These findings open the way to the manipulation of single electrons in these quantum dots without the need of external metallic gates.",

author = "Sokratis Kalliakos and Vittorio Pellegrini and Garcia, \{Cesar Pascual\} and Aron Pinczuk and Pfeiffer, \{Loren N.\} and West, \{Ken W.\}",

year = "2008",

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doi = "10.1021/nl072904p",

language = "English (US)",

volume = "8",

pages = "577--581",

journal = "Nano Letters",

issn = "1530-6984",

publisher = "American Chemical Society",

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T1 - Optical control of energy-level structure of few electrons in AlGaAs/GaAs quantum dots

AU - Kalliakos, Sokratis

AU - Pellegrini, Vittorio

AU - Garcia, Cesar Pascual

AU - Pinczuk, Aron

AU - Pfeiffer, Loren N.

AU - West, Ken W.

PY - 2008/2

Y1 - 2008/2

N2 - Optical control of the lateral quantum confinement and number of electrons confined in nanofabricated GaAs/AlGaAs quantum dots is achieved by illumination with a weak laser beam that is absorbed in the AlGaAs barrier. Precise tuning of energy-level structure and electron population is demonstrated by monitoring the low-lying transitions of the electrons from the lowest quantum-dot energy shells by resonant inelastic light scattering. These findings open the way to the manipulation of single electrons in these quantum dots without the need of external metallic gates.

AB - Optical control of the lateral quantum confinement and number of electrons confined in nanofabricated GaAs/AlGaAs quantum dots is achieved by illumination with a weak laser beam that is absorbed in the AlGaAs barrier. Precise tuning of energy-level structure and electron population is demonstrated by monitoring the low-lying transitions of the electrons from the lowest quantum-dot energy shells by resonant inelastic light scattering. These findings open the way to the manipulation of single electrons in these quantum dots without the need of external metallic gates.

UR - https://www.scopus.com/pages/publications/40449132771

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U2 - 10.1021/nl072904p

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SN - 1530-6984

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SP - 577

EP - 581

JO - Nano Letters

JF - Nano Letters

IS - 2

ER -

Optical control of energy-level structure of few electrons in AlGaAs/GaAs quantum dots

Abstract

All Science Journal Classification (ASJC) codes

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