2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/91964We present a novel scheme for performing a conditional phase gate between two spin qubits in adjacent semiconductor quantum dots through delocalized single exciton states, formed through the inter-dot Foerster interaction. We consider two resonant quantum dots, each containing a single excess conduction band electron whose spin embodies the qubit. We demonstrate that both the two-qubit gate, and arbitrary single-qubit rotations, may be realized to a high fidelity with current semiconductor and laser technology.5 pages, 3 figures; published version, equation formatting improved, references addedQuantum PhysicsMesoscale and Nanoscale Physicstext