Optical signatures of coupled quantum dots

被引：415

作者：

Stinaff, EA

Scheibner, M

Bracker, AS

Ponomarev, IV

Korenev, VL

Ware, ME

Doty, MF

Reinecke, TL

Gammon, D ^{[1
]}

机构：

[1] USN, Res Lab, Washington, DC 20375 USA

[2] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

来源：

SCIENCE | 2006年 / 311卷 / 5761期

关键词：

D O I：

10.1126/science.1121189

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

An asymmetric pair of coupled InAs quantum dots is tuned into resonance by applying an electric field so that a single hole forms a coherent molecular wave function. The optical spectrum shows a rich pattern of level anticrossings and crossings that can be understood as a superposition of charge and spin configurations of the two dots. Coulomb interactions shift the molecular resonance of the optically excited state (charged exciton) with respect to the ground-state (single charge), enabling light-induced coupling of the quantum dots. This result demonstrates the possibility of optically coupling quantum dots for application in quantum information processing.

引用

收藏

页码：636 / 639

页数：4

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