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Voltage-controlled slow light in asymmetry double quantum dots
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) Schematic of the setup. An optical pulse transmits the left QD. is a bias voltage. (b) Schematic band structure and level configuration of a double QD system for the electromagnetically induced transparency (EIT) operation. A pulsed laser excites one electron from the valence band that can tunnel to the other dot. ∣0⟩ is the system without excitations, ∣1⟩ a pair of electron and hole bound in the first dot, and ∣2⟩ one hole in the first dot with an electron in the second dot.

Image of FIG. 2.
FIG. 2.

Real and imaginary parts of the dimensionless susceptibility as a function of normalized detuning . The dashed line and the solid line are the imaginary part and real part of the linear susceptibility, respectively. The inset in (b) shows a zoom of the graph for small values of .

Image of FIG. 3.
FIG. 3.

Group velocity slowdown factor is plotted as a function of the tunneling at three linewidth values: equal to 6.6, 26.5, and with the assumption .


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Voltage-controlled slow light in asymmetry double quantum dots