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arXiv · 1109.4165

Quantum Query Complexity of Subgraph Containment with Constant-sized Certificates

Yechao Zhu
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Abstract

We study the quantum query complexity of constant-sized subgraph containment. Such problems include determining whether an $ n $-vertex graph contains a triangle, clique or star of some size. For a general subgraph $ H $ with $ k $ vertices, we show that $ H $ containment can be solved with quantum query complexity $ O(n^{2-\frac{2}{k}-g(H)}) $, with $ g(H) $ a strictly positive function of $ H $. This is better than $ \tilde{O}\s{n^{2-2/k}} $ by Magniez et al. These results are obtained in the learning graph model of Belovs.

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Yechao Zhu. 2012-07-06. Quantum Query Complexity of Subgraph Containment with Constant-sized Certificates. https://doi.org/10.1142/s0219749912500190

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