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arXiv quant-ph/0408013quant-ph
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一种检验神谕的量子算法

A quantum algorithm for examining oracles

Hiroo Azuma

摘要:

在本文中,我们考虑一个量子算法来解决以下问题:"假设$f$是一个给定的函数作为一个黑盒(也被称为oracle)和$f$是在一些与掩码不变。通过查询oracle检查$f$的属性。我们通过评估每个算法的预期查询次数来比较我们的量子算法与经典算法的效率。我们表明,我们的量子算法是更有效的比任何经典算法在某些情况下。然而,我们的量子算法并没有表现出一个指数级的加速比的大小的输入,与最好的经典算法相比。我们的算法提取了$f$的全局属性(即$f$的不变性),而忽略了$f$的局部属性(即$f$的输出)。我们可以把我们的算法看作是Simon算法的一个应用。

英文摘要:

In this paper, we consider a quantum algorithm for solving the following problem: ``Suppose $f$ is a function given as a black box (that is also called an oracle) and $f$ is invariant under some AND-mask. Examine a property of $f$ by querying the oracle.'' We compare the efficiency of our quantum algorithm with that of classical algorithms by evaluating the expected number of queries for each algorithm. We show that our quantum algorithm is more efficient than any classical algorithm in some cases. However, our quantum algorithm does not exhibit an exponential speedup in the size of an input, compared with the best classical algorithm. Our algorithm extracts a global property of $f$ (that is, invariance of $f$) while it neglects local properties of $f$ (that is, outputs of $f$). We can regard our algorithm as an application of Simon's algorithm.

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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