%0 Journal Article %T Hybrid quantum computing %A Seth Lloyd %J Physics %D 2000 %I arXiv %X Necessary 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. %U http://arxiv.org/abs/quant-ph/0008057v1