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{\it In-situ} Laser Microprocessing at the Quantum Level

Armando Rastelli·Ata Ulhaq·Suwit Kiravittaya·Lijuan Wang·Artur Zrenner·Oliver G. Schmidt
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Abstract

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.

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Armando Rastelli, Ata Ulhaq, Suwit Kiravittaya, Lijuan Wang, Artur Zrenner, Oliver G. Schmidt. 2006-10-03. {\it In-situ} Laser Microprocessing at the Quantum Level. https://doi.org/10.1063/1.2431576

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