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Quantum error correction of coherent errors by randomization

  • Quantum Optics and Quantum Information
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Abstract.

A general error correction method is presented which is capable of correcting coherent errors originating from static residual inter-qubit couplings in a quantum computer. It is based on a randomization of static imperfections in a many-qubit system by the repeated application of Pauli operators which change the computational basis. This Pauli-Random-Error-Correction (PAREC)-method eliminates coherent errors produced by static imperfections and increases significantly the maximum time over which realistic quantum computations can be performed reliably. Furthermore, it does not require redundancy so that all physical qubits involved can be used for logical purposes.

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Authors and Affiliations

  1. Institut für Angewandte Physik, Technische Universität Darmstadt, 64289, Darmstadt, Germany

    O. Kern & G. Alber

  2. Laboratoire de Physique Théorique, UMR 5152 du CNRS, Université Paul Sabatier, 31062, Toulouse Cedex 4, France

    D. L. Shepelyansky

Authors
  1. O. Kern
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  2. G. Alber
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  3. D. L. Shepelyansky
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Corresponding author

Correspondence to G. Alber.

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Kern, O., Alber, G. & Shepelyansky, D. Quantum error correction of coherent errors by randomization. Eur. Phys. J. D 32, 153–156 (2005). https://doi.org/10.1140/epjd/e2004-00196-9

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  • DOI: https://doi.org/10.1140/epjd/e2004-00196-9

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