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Slow light in quantum dot photonic crystal waveguides
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View: Figures


Image of FIG. 1.
FIG. 1.

Left: Schematic of the semiconductor QD PhC waveguide system. The QDs are located in the waveguide as indicated by the dark yellow shading. Right: Level scheme of the QDs used for obtaining EIT in a ladder configuration. A weak probe beam is applied between the electron-hole ground state transition , while a strong pump beam is resonant with two electronic states .

Image of FIG. 2.
FIG. 2.

Pulse propagation through a QD PhC waveguide with QDs excited in the ladder configuration. Input (black) and output (red) probe field at the waveguide midpoint as a function of time. The pump power density is and the incoming probe beam has a FWHM of 10 ps (a) and 1.66 ps (b).

Image of FIG. 3.
FIG. 3.

Group index as a function of pump power for three different scenarios corresponding to the PhC waveguide with QDs (blue crosses), analytic RWG with QDs (green dashed dotted line), and the passive PhC waveguide (black line). The red dotted curve is given by Eq. (1) with and . The QDs are excited in the ladder EIT configuration. The incoming probe beam has a temporal FWHM .


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Scitation: Slow light in quantum dot photonic crystal waveguides