2016/12/31 by Earl T. Campbell, Barbara M. Terhal, Christophe Vuillot · 6 citations
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1038/nature23460
published as Nature volume 549, pages 172-179 (14 September 2017) · A concise review paper. 9 pages + references. V2 includes a correction to Fig1b which had gates Z^b and X^{a+c} interchanged. This version is the one before review and editing by Nature
arxiv created 2018/11/12 · arxiv updated 2018/11/13
Current experiments are taking the first steps toward noise-resilient logical qubits. Crucially, a quantum computer must not merely store information, but also process it. A fault-tolerant computational procedure ensures that errors do not multiply and spread. This review compares the leading proposals for promoting a quantum memory to a quantum processor. We compare magic state distillation, color code techniques and other alternative ideas, paying attention to relative resource demands. We discuss the several no-go results which hold for low-dimensional topological codes and outline the potential rewards of using high-dimensional quantum (LDPC) codes in modular architectures.