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

被引：98

作者：

Montinaro, Michele ^{[1
]}

Wuest, Gunter ^{[1
]}

Munsch, Mathieu ^{[1
]}

Fontana, Yannik ^{[2
]}

Russo-Averchi, Eleonora ^{[2
]}

Heiss, Martin ^{[2
]}

Morral, Anna Fontcuberta I. ^{[2
]}

Warburton, Richard J. ^{[1
]}

Poggio, Martino ^{[1
]}

机构：

[1] Univ Basel, Dept Phys, Klingelbergstr 82, CH-4056 Basel, Switzerland

[2] Ecole Polytech Fed Lausanne, Lab Mat Semicond, CH-1015 Lausanne, Switzerland

来源：

NANO LETTERS | 2014年 / 14卷 / 08期

基金：

瑞士国家科学基金会; 欧洲研究理事会;

关键词：

Hybrid system; quantum dot; nanowire; self-assembly; strain; opto-mechanics; GAAS NANOWIRES; RESONATOR; STATE; OSCILLATOR; MICROWAVE; EMISSION; SYSTEM;

D O I：

10.1021/nl501413t

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：4454 / 4460

页数：7

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