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Single-photon emission from a type-B quantum dot
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10.1063/1.2130887
/content/aip/journal/jap/98/9/10.1063/1.2130887
http://aip.metastore.ingenta.com/content/aip/journal/jap/98/9/10.1063/1.2130887
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

PL spectrum indicating the existence of both type-A and type-B QD ensembles on the same sample. Emission from the surrounding barrier is also present at about 1.9 eV.

Image of FIG. 2.
FIG. 2.

(a) The decay time of type-A and type-B QD ensembles as a function of power density under nonresonant excitation conditions. (b) Proposed alignment of the type-B QD band structure in equilibrium and under high optical excitation.

Image of FIG. 3.
FIG. 3.

Exciton emission observed from single-QDs (in 100 nm mesas) at 4 K under cw excitation at 2.331 eV (532 nm) and a power density of . In each spectrum the individual peaks appear to originate from separate QDs.

Image of FIG. 4.
FIG. 4.

A cw photon correlation measurement recorded at 4 K and a power density of , from the QD exciton peak (centered at 1.6558 eV) shown in the inset. The fit yields a time constant of 1.26 ns which is reasonably consistent with the value of 1.61 ns obtained from the ensemble data at the same power.

Image of FIG. 5.
FIG. 5.

A pulsed photon correlation measurement recorded at 4 K and a power density of , from the InP QD peak.

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/content/aip/journal/jap/98/9/10.1063/1.2130887
2005-11-10
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Single-photon emission from a type-B InP∕GaInP quantum dot
http://aip.metastore.ingenta.com/content/aip/journal/jap/98/9/10.1063/1.2130887
10.1063/1.2130887
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