2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/89022Necessary and sufficient conditions are given for the construction of a hybrid quantum computer that operates on both continuous and discrete quantum variables. Such hybrid computers are shown to be more efficient than conventional quantum computers for performing a variety of quantum algorithms, such as computing eigenvectors and eigenvalues.12 pages, latex2e, submitted to Physical Review LettersQuantum Physicstext