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arXiv quant-ph/0503238quant-phcs.DS
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局部搜索的优化

Optimization of Partial Search

Vladimir Korepin

摘要:

量子Grover搜索算法可以在数据库中找到一个目标项目比任何经典算法更快。人们可以用准确性换取速度,甚至更快地找到包含目标项的数据库的一部分(一个块),这就是部分搜索。部分搜索算法最近由Grover和Radhakrishnan提出。这里我们优化它。搜索算法的效率是通过对oracle的查询次数来衡量的。作者提出了新版本的Grover-Radhakrishnan算法,该算法使用最少数量的查询。该算法可以在与Grover算法相同的硬件上运行。

英文摘要:

Quantum Grover search algorithm can find a target item in a database faster than any classical algorithm. One can trade accuracy for speed and find a part of the database (a block) containing the target item even faster, this is partial search. A partial search algorithm was recently suggested by Grover and Radhakrishnan. Here we optimize it. Efficiency of the search algorithm is measured by number of queries to the oracle. The author suggests new version of Grover-Radhakrishnan algorithm which uses minimal number of queries to the oracle. The algorithm can run on the same hardware which is used for the usual Grover 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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