The one-way quantum computer--a non-network model of quantum computation

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Abstract
A one-way quantum computer (QC C ) works by performing a sequence of one-qubit measurements on a particular entangled multi-qubit state, the cluster state. No non-local operations are required in the process of computation. Any quantum logic network can be simulated on the QC C . On the other hand, the network model of quantum computation cannot explain all ways of processing quantum information possible with the QC C . In this paper, two examples of the non-network character of the QC C are given. First, circuits in the Clifford group can be performed in a single time step. Second, the QC C -realization of a particular circuit—the bit-reversal gate—has no network interpretation.
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