Barenco, Adriano; Berthiaume, André; Deutsch, David; Ekert, Artur; Jozsa, Richard Stabilization of quantum computations by symmetrization. (English) Zbl 0885.68059 SIAM J. Comput. 26, No. 5, 1541-1557 (1997). Summary: We propose a method for the stabilization of quantum computations (including quantum state storage). The method is based on the operation of projection into SYM, the symmetric subspace of the full state space of \(R\) redundant copies of the computer. We describe an efficient algorithm and quantum network effecting SYM-protection and discuss the stabilizing effect of the proposed method in the context of unitary errors generated by hardware imprecision, and nonunitary errors arising from external environmental interaction. Finally, limitations of the method are discussed. Cited in 13 Documents MSC: 68Q05 Models of computation (Turing machines, etc.) (MSC2010) 81P68 Quantum computation Keywords:quantum computation; error correction; quantum state storage PDFBibTeX XMLCite \textit{A. Barenco} et al., SIAM J. Comput. 26, No. 5, 1541--1557 (1997; Zbl 0885.68059) Full Text: DOI arXiv