Photon correlation in GaAs self-assembled quantum dots

Abstract

We report on photon coincidence measurement in a single GaAs self-assembled quantum dot (QD) using a pulsed excitation light source. At low excitation, when a neutral exciton line was present in the photoluminescence (PL) spectrum, we observed nearly perfect single photon emission from an isolated QD at 670 nm wavelength. For higher excitation, multiple PL lines appeared on the spectra, reflecting the formation of exciton complexes. Cross-correlation functions between these lines showed either bunching or antibunching behavior, depending on whether the relevant emission was from a biexciton cascade or a charged exciton recombination.

5 pages, 3 figures

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Cited by in corpus (2)

• Bunching visibility for correlated photons from single GaAs quantum dots
• Single photon emission from droplet epitaxial quantum dots in the standard telecom window around a wavelength of 1.55 $\mu$m