Roads towards fault-tolerant universal quantum computation

Earl T. Campbell, Barbara M. Terhal () and Christophe Vuillot
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Earl T. Campbell: University of Sheffield
Barbara M. Terhal: JARA Institute for Quantum Information, RWTH Aachen University
Christophe Vuillot: JARA Institute for Quantum Information, RWTH Aachen University

Nature, 2017, vol. 549, issue 7671, 172-179

Abstract: Abstract A practical quantum computer must not merely store information, but also process it. To prevent errors introduced by noise from multiplying and spreading, a fault-tolerant computational architecture is required. Current experiments are taking the first steps toward noise-resilient logical qubits. But to convert these quantum devices from memories to processors, it is necessary to specify how a universal set of gates is performed on them. The leading proposals for doing so, such as magic-state distillation and colour-code techniques, have high resource demands. Alternative schemes, such as those that use high-dimensional quantum codes in a modular architecture, have potential benefits, but need to be explored further.

Date: 2017
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DOI: 10.1038/nature23460

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