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Highly entangled states called cluster states are a universal resource formeasurement-based quantum computing (QC). Here we propose an efficient methodfor producing large cluster states using superconducting quantum circuits. Weshow that a large cluster state can be efficiently generated in just one stepby turning on the inter-qubit coupling for a short time. Because theinter-qubit coupling is only switched on during the time interval forgenerating the cluster state, our approach is also convenient for preparing theinitial state for each qubit and for implementing one-way QC via single-qubitmeasurements. Moreover, the cluster state is robust against parametervariations.Comment: 4 pages, 1 figur

Efficient one-step generation of large cluster states with solid-state circuits