Photon antibunching in single CdSe/ZnS quantum dot fluorescence

被引:275
作者
Lounis, B [1 ]
Bechtel, HA
Gerion, D
Alivisatos, P
Moerner, WE
机构
[1] Stanford Univ, Dept Chem, Stanford, CA 94305 USA
[2] Univ Bordeaux 1, CPMOH, F-33405 Talence, France
[3] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
基金
美国国家科学基金会;
关键词
D O I
10.1016/S0009-2614(00)01042-3
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We investigate the fluorescence intensity correlation function of a single CdSe quantum dot (QD) using a start-stop experiment. We observe strong photon antibunching, a signature of non-classical light emission, over a large range of intensities (0.1-100 kW/cm(2)). The lack of coincidence at zero time delay indicates a highly efficient Auger ionization process, which suppresses multi-photon emission in these colloidal QDs. Using careful analysis of the saturation behavior of the coincidence histograms, the absorption cross-section of a single QD has also been derived. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:399 / 404
页数:6
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