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arXiv 2201.03000cs.DScs.DCquant-ph
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集团检测的量子分布式算法

Quantum Distributed Algorithms for Detection of Cliques

Keren Censor-Hillel, Orr Fischer, François Le Gall, Dean Leitersdorf, Rotem Oshman

摘要:

量子计算提供的可能性最近引起了分布式计算社区的关注,几个突破性的结果显示量子分布式算法比已知的最快的经典算法运行得更快,甚至两种模型之间的分离。一个主要的例子是Izumi,Le Gall和Magniez [STACS 2020]的结果,他们表明量子分布式算法的三角形检测比三角形列表更容易,而在经典情况下,类似的结果是未知的。在本文中,我们提出了一个快速量子分布式集团检测的框架。这改进了三角形情况的现有技术,并且也更一般,适用于更大的集团大小。我们的主要技术贡献是一个新的方法来检测集团封装为搜索任务的节点,可以添加到更小的集团。为了从我们的方法中提取最好的复杂性,我们开发了一个嵌套分布式量子搜索的框架,该框架采用量子本身的检查程序。此外,我们证明了一个电路的复杂性障碍的形式$Ω(n^{3/5+ε})$的$K_p$ -检测任何$p \geq 4$的下界,即使在经典的(非量子)分布式CONGEST设置。

英文摘要:

The possibilities offered by quantum computing have drawn attention in the distributed computing community recently, with several breakthrough results showing quantum distributed algorithms that run faster than the fastest known classical counterparts, and even separations between the two models. A prime example is the result by Izumi, Le Gall, and Magniez [STACS 2020], who showed that triangle detection by quantum distributed algorithms is easier than triangle listing, while an analogous result is not known in the classical case. In this paper we present a framework for fast quantum distributed clique detection. This improves upon the state-of-the-art for the triangle case, and is also more general, applying to larger clique sizes. Our main technical contribution is a new approach for detecting cliques by encapsulating this as a search task for nodes that can be added to smaller cliques. To extract the best complexities out of our approach, we develop a framework for nested distributed quantum searches, which employ checking procedures that are quantum themselves. Moreover, we show a circuit-complexity barrier on proving a lower bound of the form $Ω(n^{3/5+ε})$ for $K_p$-detection for any $p \geq 4$, even in the classical (non-quantum) distributed CONGEST setting.

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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