Physics – Condensed Matter – Materials Science
Scientific paper
2006-10-03
Appl. Phys. Lett. 90, 073120 (2007)
Physics
Condensed Matter
Materials Science
3 figures
Scientific paper
10.1063/1.2431576
One of the biggest challenges of nanotechnology is the fabrication of nano-objects with perfectly controlled properties. Here we employ a focused laser beam both to characterize and to {\it in-situ} modify single semiconductor structures by heating them from cryogenic to high temperatures. The heat treatment allows us to blue-shift, in a broad range and with resolution-limited accuracy, the quantized energy levels of light and charge carriers confined in optical microcavities and self-assembled quantum dots (QDs). We demonstrate the approach by tuning an optical mode into resonance with the emission of a single QD and by bringing different QDs in mutual resonance. This processing method may open the way to a full control of nanostructures at the quantum level.
Kiravittaya Suwit
Rastelli Armando
Schmidt Oliver G.
Ulhaq Ata
Wang Lijuan
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