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arXiv quant-ph/0011065quant-ph
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量子与经典查询复杂度的明显区别

Sharp Quantum vs. Classical Query Complexity Separations

J. Niel de Beaudrap, Richard Cleve, John Watrous

摘要:

我们获得了迄今为止已知的量子和经典查询复杂性之间最强的分离-具体来说,我们定义了一个黑盒问题,该问题在经典有界错误的情况下需要指数级的多个查询,但在量子情况下可以用单个查询(和多项式数量的辅助操作)精确解决。这个问题很容易定义,解决这个问题的量子算法也很简单,当用某些量子傅里叶变换(QFT)来描述时,这些变换对于有限域的代数结构具有自然属性。这些QFT可能是独立的利益,我们也调查他们的非交换有限环的推广。

英文摘要:

We obtain the strongest separation between quantum and classical query complexity known to date -- specifically, we define a black-box problem that requires exponentially many queries in the classical bounded-error case, but can be solved exactly in the quantum case with a single query (and a polynomial number of auxiliary operations). The problem is simple to define and the quantum algorithm solving it is also simple when described in terms of certain quantum Fourier transforms (QFTs) that have natural properties with respect to the algebraic structures of finite fields. These QFTs may be of independent interest, and we also investigate generalizations of them to noncommutative finite rings.

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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