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In this study, we inspect and analyze the effect of Al implantation into AlN by conducting confocal microscopy on the ion implanted regions, before and after implantation, followed by an annealing step. The independent effect of annealing is studied in an unimplanted control region, which showed that annealing alone does not produce new emitters. We observed that point-like emitters are created in the implanted regions after annealing by tracking individual locations in a lithographically patterned sample. The newly created quantum emitters show anti-bunching under ambient conditions and are spectrally similar to the previously discovered emitters in as-grown AlN.
Yağcı et al. (Tue,) studied this question.