Site-controlled quantum dots fabricated using an atomic-force microscope assisted technique

Site-controlled quantum dots fabricated using an atomic-force microscope assisted technique

<p>Abstract</p><p>An atomic-force microscope assisted technique is developed to control the position and size of self-assembled semiconductor quantum dots (QDs). Presently, the site precision is as good as &#177; 1.5 nm and the size fluctuation is within &#177; 5% with the...

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Bibliographic Details
Main Authors: Sakuma Y, Kawabe M, Okada Y, Song HZ, Usuki T, Ohshima T, Takemoto K, Miyazawa T, Hirose S, Nakata Y, Takatsu M, Yokoyama N
Format: Article
Language:English
Published: SpringerOpen 2006-01-01
Series:Nanoscale Research Letters
Subjects:
Quantum dot
Site-Control
Atomic-force microscope
Local oxidation
Quantum computer
Quantum communication
Online Access:http://dx.doi.org/10.1007/s11671-006-9012-x
Description
Summary:<p>Abstract</p><p>An atomic-force microscope assisted technique is developed to control the position and size of self-assembled semiconductor quantum dots (QDs). Presently, the site precision is as good as &#177; 1.5 nm and the size fluctuation is within &#177; 5% with the minimum controllable lateral diameter of 20 nm. With the ability of producing tightly packed and differently sized QDs, sophisticated QD arrays can be controllably fabricated for the application in quantum computing. The optical quality of such site-controlled QDs is found comparable to some conventionally self-assembled semiconductor QDs. The single dot photoluminescence of site-controlled InAs/InP QDs is studied in detail, presenting the prospect to utilize them in quantum communication as precisely controlled single photon emitters working at telecommunication bands.</p>
ISSN:1931-7573
1556-276X

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