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We present a fully three-dimensional study of the multiexciton opticalresponse of vertically coupled GaN-based quantum dots via adirect-diagonalization approach. The proposed analysis is crucial inunderstanding the fundamental properties of few-particle/exciton interactionsand, more important, may play an essential role in the design/optimization ofsemiconductor-based quantum information processing schemes. In particular, wefocus on the interdot exciton-exciton coupling, key ingredient in recentlyproposed all-optical quantum processors. Our analysis demonstrates that thereis a large window of realistic parameters for which both biexcitonic shift andoscillator strength are compatible with such implementation schemes.Comment: 3 two-column pages, 3 figure

Exciton–exciton interaction engineering in coupled GaN quantum dots