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arXiv 1808.03092quant-phcs.ITmath.IT
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立方格上三维Toric码和焊接码的高效译码

Efficiently decoding the 3D toric codes and welded codes on cubic lattices

Abhishek Kulkarni, Pradeep Kiran Sarvepalli

摘要:

近年来,人们对三维(3D)量子码的兴趣越来越大。最早提出的3D量子码之一是3D复曲面码。已经表明,3D颜色代码可以映射到3D复曲面代码。立方晶格上的三维复曲面代码也是迄今为止能量势垒最高的焊接代码的构建块。尽管众所周知,但尚未对3D复曲面代码的性能进行广泛研究。在本文中,我们提出了有效的解码算法的三维环面码的立方晶格与无边界,并报告其性能的各种量子信道。我们观察到对于位翻转错误的阈值为$\gtrsim 12\%$,对于相位翻转错误的阈值为$\approx 3\%$,以及对于擦除信道的阈值为$ 24.8\%$。我们还研究了焊接三维环面码在量子擦除信道上的性能。我们没有观察到擦除通道上焊接代码的阈值。

英文摘要:

The recent years have seen a growing interest in quantum codes in three dimensions (3D). One of the earliest proposed 3D quantum codes is the 3D toric code. It has been shown that 3D color codes can be mapped to 3D toric codes. The 3D toric code on cubic lattice is also a building block for the welded code which has highest energy barrier to date. Although well known, the performance of the 3D toric code has not been studied extensively. In this paper, we propose efficient decoding algorithms for the 3D toric code on a cubic lattice with and without boundaries and report their performance for various quantum channels. We observe a threshold of $\gtrsim 12\%$ for the bit flip errors, $\approx 3\%$ for phase flip errors and $ 24.8\%$ for erasure channel. We also study the performance of the welded 3D toric code on the quantum erasure channel. We did not observe a threshold for the welded code over the erasure channel.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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