arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv quant-ph/0506105quant-ph
收藏

解个数已知时Grover搜索算法的改进

Modified Grover's search algorithm for the cases where the number of solutions is known

A. S. Gupta, M. Gupta, A. Pathak

摘要:

Grover的搜索算法在$O(\sqrt{N/M})$步骤中搜索$N$未排序项目的数据库,其中$M$表示搜索问题的解的数量。本文提出了一种在已知$M$值的情况下,按$O(logN)$步骤搜索$N$未排序项目数据库的方案。它还表明,当$M$是未知的,但如果我们可以估计的上限可能值的$M$,然后在传统的Grover算法的时间复杂度的改进是可能的。在这种情况下,本方案将时间复杂度降低到$O(MlogN)$。

英文摘要:

Grover's search algorithm searches a database of $N$ unsorted items in $O(\sqrt{N/M})$ steps where $M$ represents the number of solutions to the search problem. This paper proposes a scheme for searching a database of $N$ unsorted items in $O(logN)$ steps, provided the value of $M$ is known. It is also shown that when $M$ is unknown but if we can estimate an upper bound of possible values of $M$, then an improvement in the time complexity of conventional Grover's algorithm is possible. In that case, the present scheme reduces the time complexity to $O(MlogN)$.

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。

↑