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Single-photon emission from InGaAs quantum dots grown on (111) GaAs
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View: Figures


Image of FIG. 1.
FIG. 1.

Spatial distribution of the QDs. The color scale indicates the value of the maximum intensity in the spectral range between 1.295 and 1.315 eV. The distance between dots emitting in this spectral range is on the order of micrometer. For four local spectra are plotted with the same scaling of the intensity.

Image of FIG. 2.
FIG. 2.

(a) Second-order correlation measurement (gray) and simulation (black) resulting in a value of 0.1. (b) Spectra of QD1 with a polarizer at 90° (red dashed) and 180° (black solid), demonstrating the splitting of . (c) Spectral center position of the luminescence line B and C from QD1 obtained from a Gaussian fit in dependence of the polarization. (d) the same for QD2: no periodical dependence is visible indicating a vanishing FSS.

Image of FIG. 3.
FIG. 3.

Top: excitation power dependence of the photoluminescence. The luminescence lines from single excitonic complexes are denoted by A, B, and C. Bottom: polarization dependence of the lines A, B, and C from QD1 and of lines B and C from QD2. The dotted lines show the center energy of the lines as in Fig. 2(c) and 2(d).


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Single-photon emission from InGaAs quantum dots grown on (111) GaAs