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Quantum measurement is universal for quantum computation. The model ofquantum computation introduced by Nielsen and further developed by Leung relieson a generalized form of teleportation. In order to simulate any n-qubitunitary transformation with this model, 4 auxiliary qubits are required.Moreover Leung exhibited a universal family of observables composed of 4two-qubit measurements. We introduce a model of quantum computation viameasurements only, relying on state transfer: state transfer only retains thepart of teleportation which is necessary for computating. In order to simulateany n-qubit unitary transformation with this new model, only one auxiliaryqubit is required. Moreover we exhibit a universal family of observablescomposed of 3 one-qubit measurements and only one two-qubit measurement. Thismodel improves those of Nielsen and Leung in terms of both the number ofauxiliary qubits and the number of two-qubit measurements required for quantumuniversality. In both cases, the minimal amounts of necessary resources are nowreached: one auxiliary qubit (because measurement is destructive) and onetwo-qubit measurement (for creating entanglement).Comment: 7 pages, 11 figure

STATE TRANSFER INSTEAD OF TELEPORTATION IN MEASUREMENT-BASED QUANTUM COMPUTATION