Nano Archive

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

Kalliakos, Sokratis and Pellegrini, Vittorio and Garcia, Cesar Pascual and Pinczuk, Aron and Pfeiffer, Loren N. and West, Ken W. (2008) Optical control of energy-level structure of few electrons in AlGaAs/GaAs quantum dots. NANO LETTERS, 8 (2). pp. 577-581.

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Official URL: http://pubs.acs.org/doi/full/10.1021/nl072904p

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.

Item Type:Article
Uncontrolled Keywords:quantum confinement - nanofabrication - quantum dots - metallic gates
Subjects:Material Science > Nanofabrication processes and tools
Physical Science > Nanoelectronics
ID Code:6148
Deposited By:IoN
Deposited On:15 Sep 2009 09:42
Last Modified:15 Sep 2009 09:42

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