High-efficiency single-photon sources based on InAs/GaAs quantum dots in pillar microcavities

被引：2

作者：

Bennett, AJ

Unitt, DC

Atkinson, P

Ritchie, DA

Shields, AJ

机构：

[1] Cambridge Res Lab, Toshiba Res Europe Ltd, Cambridge CB4 0WE, England

[2] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2005年 / 26卷 / 1-4期

关键词：

microcavities; single photon; efficiency;

D O I：

10.1016/j.physe.2004.08.005

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We have experimentally investigated pillar microcavities containing a low density of InAs/GaAs self-assembled quantum dots. We observe a four-fold reduction in the radiative lifetime of an excitonic state due to the Purcell effect and show that we are able to collect 10% of the photons emitted by this state into a microscope objective. Under quasi-resonant excitation the multi-photon emission probability is more than 50 times lower than a Poissonian source of the same intensity. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：391 / 394

页数：4

共 9 条

[1] Solid-state single photon sources:: light collection strategies [J].