arXivDaily arXiv每日学术速递 周一至周五更新
arXiv quant-ph/9805082quant-ph
收藏

量子计数

Quantum Counting

Gilles Brassard, Peter Hoyer, Alain Tapp

摘要:

我们研究了Grover量子搜索算法的一些推广。首先,我们推广的Grover迭代的振幅放大的概念。然后,我们表明,通过量子搜索算法在经典的蛮力获得的二次加速仍然可以获得一个大家庭的搜索问题,其中存在良好的经典算法。最后,作为我们的主要结果,我们结合Grover和Shor的量子算法的思想来执行近似计数,这可以被看作是一个幅度估计过程。

英文摘要:

We study some extensions of Grover's quantum searching algorithm. First, we generalize the Grover iteration in the light of a concept called amplitude amplification. Then, we show that the quadratic speedup obtained by the quantum searching algorithm over classical brute force can still be obtained for a large family of search problems for which good classical heuristics exist. Finally, as our main result, we combine ideas from Grover's and Shor's quantum algorithms to perform approximate counting, which can be seen as an amplitude estimation process.

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。

↑