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Abstract: One of the fundamental conditions for one-way quantum computation 1WQC isthe ability to make sequential measurements on isolated qubits that comprisethe highly entangled resource for 1WQC, the cluster state. This has been asignificant impediment in the implementation of 1WQC with ultracold atomsconfined in optical lattices, because the width of the measuring lasers isgenerally much greater than the atomic qubit spacing. We demonstrate thatdeterministic 1WQC is nevertheless possible, with a polynomial increase in thenumber of operations, as long as the center of the beams can be positioned withhigh accuracy. Extending the number of cluster atoms, the scheme is also ableto compensate for accidental measurements of an arbitrary number of nearbyqubits.



Author: Timothy P. Friesen, David L. Feder

Source: https://arxiv.org/







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