Quantum Dot Opto-Mechanics in a Fully Self-Assembled Nanowire

Montinaro, Michele and Wüst, Gunter and Munsch, Mathieu and Fontana, Yannik and Russo-Averchi, Eleonora and Heiss, Martin and Fontcuberta I. Morral, Anna and Warburton, Richard J. and Poggio, Martino. (2014) Quantum Dot Opto-Mechanics in a Fully Self-Assembled Nanowire. Nano Letters, 14 (8). pp. 4454-4460.

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Official URL: http://edoc.unibas.ch/dok/A6319324

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We show that optically active quantum dots (QDs) embedded in MBE-grown GaAs/AlGaAs core-shell nanowires (NWs) are coupled to the NW mechanical motion. Oscillations of the NW modulate the QD emission energy in a broad range exceeding 14 meV. Furthermore, this opto-mechanical interaction enables the dynamical tuning of two neighboring QDs into resonance, possibly allowing for emitter-emitter coupling. Both the QDs and the coupling mechanism, i.e. material strain, are intrinsic to the NW structure and do not depend on any functionalization or external field. Such systems open up the prospect of using QDs to probe and control the mechanical state of a NW, or conversely of making a quantum nondemolition readout of a QD state through a position measurement.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Nanotechnologie Argovia (Poggio)
UniBasel Contributors:Poggio, Martino and Montinaro, Michele and Wüst, Gunter Johannes and Munsch, Mathieu and Warburton, Richard J
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Chemical Society
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:03 Aug 2018 14:17
Deposited On:05 Dec 2014 09:45

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