Fig. 1: Two-photon resonant excitation of a nanowire quantum dot. | npj Quantum Information

Fig. 1: Two-photon resonant excitation of a nanowire quantum dot.

From: Resonant excitation of nanowire quantum dots

Fig. 1

a Scanning electron microscopy image (SEM) showing an AlGaAs nanowire (highlighted blue). The GaAs quantum dot is not visible in SEM images since it is embedded in the nanowire, but its location is marked with a red dashed box. b and c Schematics of the energy levels and emission spectrum under continuous-wave above-bandgap excitation. d and e Same as in b and c but under continuous-wave two-photon excitation of the biexciton. Undulated arrow in d represents phonon-assisted excitation of the charged exciton.

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