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arXiv 1306.5173quant-phcs.ITmath.IT
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几个量子译码问题的困难性

On the Hardnesses of Several Quantum Decoding Problems

Kao-Yueh Kuo, Chung-Chin Lu

摘要:

我们对量子稳定子码的三个重要解码问题的时间复杂度进行了分类。首先,无论信道模型如何,量子有界距离解码都是NP难的,就像Berlekamp,McEliece和Tilborg在1978年对经典二进制线性码所做的那样。然后,在去极化信道,解码问题找到一个最可能的错误,并为最小化解码错误概率也被证明是NP-难的。我们的研究结果表明,找到一个多项式时间解码算法的一般稳定子码可能是不可能的,但这,另一方面,加强了量子密码的基础。

英文摘要:

We classify the time complexities of three important decoding problems for quantum stabilizer codes. First, regardless of the channel model, quantum bounded distance decoding is shown to be NP-hard, like what Berlekamp, McEliece and Tilborg did for classical binary linear codes in 1978. Then over the depolarizing channel, the decoding problems for finding a most likely error and for minimizing the decoding error probability are also shown to be NP-hard. Our results indicate that finding a polynomial-time decoding algorithm for general stabilizer codes may be impossible, but this, on the other hand, strengthens the foundation of quantum code-based cryptography.

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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