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|Type:||Artigo de periódico|
|Title:||Photon Anti-bunching In Acoustically Pumped Quantum Dots|
|Author:||Couto Jr. O.D.D.|
|Abstract:||Although extensive research on nanostructures has led to the discovery of a number of efficient ways to confine carriers in reduced dimensions, little has been done to make use of the unique properties of various nanostructured systems through coupling by means of the controllable transfer of carriers between them. Here, we demonstrate a novel approach for the controllable transfer of electrons and holes between a semiconductor quantum well and an embedded quantum dot using the moving piezoelectric potential modulation induced by an acoustic phonon. We show that this moving potential not only transfers carriers between the quantum well and an array of quantum dots, but can also control their capture and recombination in discrete quantum dot states within the array. This feature is used to demonstrate a high-frequency, single-photon source with tunable emission energy by acoustically transferring carriers to a selected quantum dot. © 2009 Macmillan Publishers Limited.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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