Measurement of optical absorption by a single quantum dot exciton -: art. no. 241310

被引：113
|
作者：
Guest, JR [1 ]
Stievater, TH
Li, XQ
Cheng, J
Steel, DG
Gammon, D
Katzer, DS
Park, D
Ell, C
Thränhardt, A
Khitrova, G
Gibbs, HM
机构：
[1] Univ Michigan, Harrison M Randall Lab Phys, Ann Arbor, MI 48109 USA
[2] USN, Res Lab, Washington, DC 20375 USA
[3] Univ Arizona, Ctr Opt Sci, Tucson, AZ 85721 USA
来源：
PHYSICAL REVIEW B | 2002年 / 65卷 / 24期
关键词：
D O I：
10.1103/PhysRevB.65.241310
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have measured the optical absorption due to an exciton confined to a single interface fluctuation quantum dot by directly measuring the transmission through both a submicron aperture and near-field microscopy. The measurements reveal large dipole moments approaching 100 D at 6 K. These results are compared to theoretical predictions based on a physical size estimated from photoluminescence excitation spectroscopy. The very large dipole moment makes these quantum dots attractive candidates for use in microcavities and quantum logic gates.
引用
收藏
页码：2413101 / 2413104
页数：4
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