Fabrication of Semiconductor Quantum Dot Molecules: Droplet Epitaxy and Local Oxidation Nanolithography Techniques

Pablo Alonso, Javier Martin Sanchez

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

A semiconductor quantum dot molecule (QDM) composed of two interacting quantum dots (QDs) is the simplest coupled system formed by semiconductor quantum nanostructures. Potentially, a QDM is the ideal building block for the realization of a quantum computation device. However, the fabrication of QDMs is far from being a straightforward task, particularly if a precise control of QDs density, size, or spatial location is required. Recently, an important improvement in the control of these properties has been achieved by using patterned semiconductor substrates followed by preferential epitaxial growth. In this chapter we will overview two of such fabrication methods, which are based on: (1) in situ droplet epitaxy “nanodrilling” and (2) ex situ local oxidation nanolithography.
Original languageEnglish
Title of host publicationQuantum dot molecules
Editors Jiang Wu, Zhiming M. Wang
Pages1-29
Number of pages29
Volume14
DOIs
Publication statusPublished - 2014

Publication series

NameLecture Notes in Nanoscale Science and Technology

Fields of science

  • 103 Physics, Astronomy

JKU Focus areas

  • Nano-, Bio- and Polymer-Systems: From Structure to Function

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