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Resonant transmission spectroscopy on the to transitions of a charge tunable InGaAs quantum dot
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10.1063/1.2906900
/content/aip/journal/apl/92/15/10.1063/1.2906900
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/15/10.1063/1.2906900
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) transmission spectrum of an uncharged QD as sketched on the right side. (b) spectrum of an transition on the same QD charged with one electron. (c) transitions as sketched on the lower right. The three resonances differ in charge. All data were taken under an intensity of . The integration time per data point is for (a) and (b), and for (c).

Image of FIG. 2.
FIG. 2.

All observed resonance peak positions are plotted as a function of gate voltage. The charging events of the QD can be seen as jumps in energy and are marked by dashed lines. The charge states are listed. The inset shows the QD independent background signal for three laser wavelengths and the circle marks the QD resonances on top of this background.

Image of FIG. 3.
FIG. 3.

Zooms into Fig. 2 labeled by the charge state. (a) transitions. The resonances for the QD charged with one electron show a rich structure. The two lines have slopes of 1.3 and . The states charged with two and four electrons show clear plateaus but anticrossing with the Fermi energy at the charging voltages. (b) All observed transitions are fitted with linear functions. The two charging states show a clear overlap and no departure from the linear behavior at the charging voltage.

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/content/aip/journal/apl/92/15/10.1063/1.2906900
2008-04-15
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Resonant transmission spectroscopy on the p to p transitions of a charge tunable InGaAs quantum dot
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/15/10.1063/1.2906900
10.1063/1.2906900
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