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Transient electromagnetically induced transparency in self-assembled quantum dots
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View: Figures


Image of FIG. 1.
FIG. 1.

Photoluminescence spectrum of the QD ensemble compared to the spectrum of the broad optical pulse.

Image of FIG. 2.
FIG. 2.

A -shaped EIT scheme (a). Schematics of the exciton spin level splitting from degenerate circularly polarized into linearly polarized eigenstates and induced by the asymmetric exchange interaction (b). Exciton spin EIT scheme (c). In the spin scheme, a prepulse or the control pulse (transition ) creates an exciton and prepares an optically “empty” transition. The signal pulse has a perpendicular polarization to that of the control pulse.

Image of FIG. 3.
FIG. 3.

(a) Absorption change for pulses of 0.8, 2, 5, and spectral widths (temperature ), and for different temperatures (b) ( wide pulses). Average control pulse power . In (b), the curves are shifted with respect to each other for clarity.

Image of FIG. 4.
FIG. 4.

Dependence of the absorption dip amplitude on the pulse width (a) and on the average power of the control pulse (b). In the first case, the signal is divided by the pulse spectral width (FWHM).


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Transient electromagnetically induced transparency in self-assembled quantum dots