Voltage-controlled electron-hole interaction in a single quantum dot

被引：3

作者：

Högele, A

Seidl, S

Kroner, M

Karrai, K

Warburton, RJ

Atatüre, M

Dreiser, J

Imamoglu, A

Gerardot, BD

Petroff, PM

机构：

[1] Univ Munich, Ctr NanoSci, D-80539 Munich, Germany

[2] Heriot Watt Univ, Sch Engn & Phys Sci, Edinburgh EH14 4AS, Midlothian, Scotland

[3] ETH Honggerberg, Inst Quantum Elect, CH-8093 Zurich, Switzerland

[4] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

来源：

JOURNAL OF SUPERCONDUCTIVITY | 2005年 / 18卷 / 02期

基金：

英国工程与自然科学研究理事会;

关键词：

quantum dot; absorption; charged exciton; electron-hole exchange; fine structure;

D O I：

10.1007/s10948-005-3377-4

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The ground state of neutral and negatively charged excitons confined to a single self-assembled InGaAs quantum dot is probed in a direct absorption experiment by high resolution laser spectroscopy. We show how the anisotropic electron-hole exchange interaction depends on the exciton charge and demonstrate how the interaction can be switched on and off with a small dc voltage. Furthermore, we report polarization sensitive analysis of the excitonic interband transition in a single quantum dot as a function of charge with and without magnetic field.

引用

收藏

页码：245 / 249

页数：5

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