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arXiv 1209.5491quant-phcs.DScs.ET
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量子二元场反演:通过基表示的选择改进电路深度

Quantum binary field inversion: improved circuit depth via choice of basis representation

Brittanney Amento, Martin Roetteler, Rainer Steinwandt

摘要:

GF(2^m)形式的有限域在编码理论和密码学中起着重要的作用。我们表明,如何表示这些字段的元素的选择可以有显着的量子算术的资源需求的影响。特别是,我们展示了如何使用高斯正常的基础表示和“鬼位基础”表示可以用来实现逆变器的深度为O(m log(m))的量子线路。据我们所知,这是文献中报道的第一个具有次二次深度的结构。我们的量子线路的乘法逆的计算是基于Itoh-Tsujii算法,该算法利用,在正常的基础表示平方对应于置换的系数。我们给出了资源估计的基础上的一个基本的门集,这是有用的容错实现的二元域GF(2 ^m)上的反转的量子线路。

英文摘要:

Finite fields of the form GF(2^m) play an important role in coding theory and cryptography. We show that the choice of how to represent the elements of these fields can have a significant impact on the resource requirements for quantum arithmetic. In particular, we show how the use of Gaussian normal basis representations and of `ghost-bit basis' representations can be used to implement inverters with a quantum circuit of depth O(m log(m)). To the best of our knowledge, this is the first construction with subquadratic depth reported in the literature. Our quantum circuit for the computation of multiplicative inverses is based on the Itoh-Tsujii algorithm which exploits that in normal basis representation squaring corresponds to a permutation of the coefficients. We give resource estimates for the resulting quantum circuit for inversion over binary fields GF(2^m) based on an elementary gate set that is useful for fault-tolerant implementation.

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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