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A Simple Comparative Analysis of Exact and Approximate Quantum Error Correction

机译:精确和近似量子误差校正的简单比较分析

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摘要

We present a comparative analysis of exact and approximate quantum error correction by means of simple unabridged analytical computations. For the sake of clarity, using primitive quantum codes, we study the exact and approximate error correction of the two simplest unital (Pauli errors) and nonunital (non-Pauli errors) noise models, respectively. The similarities and differences between the two scenarios are stressed. In addition, the performances of quantum codes quantified by means of the entanglement fidelity for different recovery schemes are taken into consideration in the approximate case. Finally, the role of self-complementarity in approximate quantum error correction is briefly addressed.
机译:我们通过简单的未删节的分析计算,给出了精确和近似量子误差校正的比较分析。为了清楚起见,我们使用原始量子代码分别研究了两个最简单的单位(保利误差)和非单位(非保利误差)噪声模型的精确和近似误差校正。强调了两种情况之间的异同。此外,在近似情况下,还要考虑通过纠缠保真度对不同恢复方案进行量化的量子代码的性能。最后,简要介绍了自互补在近似量子误差校正中的作用。

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  • 来源
    《Open Systems & Information Dynamics》 |2014年第3期|1450002.1-1450002.41|共41页
  • 作者

    Carlo Cafaro; Peter van Loock;

  • 作者单位

    Max-Planck Institute for the Science of Light, 91058 Erlangen, Germany,Institute of Physics, Johannes-Gutenberg University Mainz, 55128 Mainz, Germany;

    Institute of Physics, Johannes-Gutenberg University Mainz, 55128 Mainz, Germany;

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