Condensed Matter Physics Seminar
2 p.m., Thursday, April 20, 2006
Room 1201, Physics Building
Optical properties of discrete quantum dots in microcavities
Glenn Solomon
(NIST Gaithersburg)
Abstract: Quantum dots (QDs) of InAs in GaAs are a robust source of
single photons. The discrete nature of states in these QDs can be seen through
photoluminescence and photon statistics experiments. Because they are formed by
conventional epitaxial crystal growth, these QDs can be inserted into a variety
of microfabricated optical structures and the light-matter interaction can be
studied. I will discuss the interaction of individual QDs with a few types of
microcavities. In the weak coupling, spontaneous emission regime, the decay rate
of QD excitons can be significantly modified and lead to dramatically improved
extraction efficiencies. Such a structure makes an excellent single photon
source and can be used in a variety of experiments.
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Host: Anderson
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