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arXiv 2203.10201quant-phcs.DScs.ET
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网络可靠性的量子算法

A Quantum Algorithm for Network Reliability

Stefan Pabst, Yunseong Nam

摘要:

构建一个能够抵御组件故障的网络至关重要。我们获得电力和电信或物联网都取决于强大网络提供的不间断服务。计算网络可靠度$R$是$\sharp$ P-完全的,对于大中型网络很难精确计算。在这里,我们提出了一个明确的,电路级实现的量子算法,计算$R$。我们的算法需要$O(EV/ε)$门操作和$O(E)$量子位,其中$V$和$E$是图中节点和边的数量,$ε$是可靠性估计中的不确定性。这构成了一个显着的多项式加速目前已知的最佳经典方法。我们进一步提供量子门计数,相关的预容错和容错制度,足以计算$R$。

英文摘要:

Building a network that is resilient to a component failure is vital. Our access to electricity and telecommunications or the internet of things all hinge on an uninterrupted service provided by a robust network. Calculating the network reliability $R$ is $\sharp$P-complete and intractable to calculate exactly for medium and large networks. Here, we present an explicit, circuit-level implementation of a quantum algorithm that computes $R$. Our algorithm requires $O(EV/ε)$ gate operations and $O(E)$ qubits, where $V$ and $E$ are the number of nodes and edges in the graph and $ε$ is the uncertainty in the reliability estimation. This constitutes a significant polynomial speedup over the best classical approaches currently known. We further provide quantum gate counts, relevant for both pre-fault-tolerant and fault-tolerant regimes, sufficient to compute $R$.

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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