Fig. 3: Improvements in the resonant optical properties of QDs through surface passivation. | Light: Science & Applications

Fig. 3: Improvements in the resonant optical properties of QDs through surface passivation.

From: Deterministic resonance fluorescence improvement of single quantum dots by optimized surface passivation

Fig. 3

a RF spectra of the QD representing the typical emission before and after passivation. b Comparison of linewidths from randomly selected QDs before and after passivation under resonant excitation. c The fine structure (linewidth) of the pulsed-RF from a typical QD (named after QD2) before and after passivation. d Comparison of linewidths from eight individual QDs before and after passivation with dot-to-dot comparisons. All the linewidths are measured by the Scanning Fabry–Pérot (SFP) method. e Pulsed-RF spectrum of a typical QD (named after QD-A) before and after passivation. The spectrum revives from mere background to obvious signal after passivation. f By varying the amplitude of the pumping laser field, a Rabi oscillation up to 2π is observed

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