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Complexity analysis of quantum walk based search algorithms
Quantum Physics · Submitted 7 Aug 2014
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We present several families of graphs that allow both efficient quantum walk implementations and efficient quantum walk based search algorithms.
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The abstract, sentence by sentence
We present several families of graphs that allow both efficient quantum walk implementations and efficient quantum walk based search algorithms. For these graphs, we construct quantum circuits that explicitly implement the full quantum walk search algorithm, without reference to a `black box' oracle. These circuits provide a practically implementable method to explore quantum walk based search algorithms with the aim of eventual real-world applications. We also provide a numerical analysis of a quantum walk based search along a twisted toroid family of graphs, which requires O($\sqrt{n}$ log($n$)) elementary 2-qubit quantum gate operations to find a marked node.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We present several families of graphs that allow both efficient quantum walk implementations and efficient quantum walk based search algorithms. | contribution 0.98 | 0.87 | 0.46 | asserted 1.00 |
| s1 | For these graphs, we construct quantum circuits that explicitly implement the full quantum walk search algorithm, without reference to a `black box' oracle. | method 0.59 | 0.95 | 0.17 | asserted 1.00 |
| s2 | These circuits provide a practically implementable method to explore quantum walk based search algorithms with the aim of eventual real-world applications. | interpretation 0.56 | 0.77 | 0.18 | asserted 0.92 |
| s3 | We also provide a numerical analysis of a quantum walk based search along a twisted toroid family of graphs, which requires O($\sqrt{n}$ log($n$)) elementary 2-qubit quantum gate operations to find a marked node. | result 0.92 | 0.95 | 0.26 | asserted 1.00 |
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Original abstract
We present several families of graphs that allow both efficient quantum walk implementations and efficient quantum walk based search algorithms. For these graphs, we construct quantum circuits that explicitly implement the full quantum walk search algorithm, without reference to a `black box' oracle. These circuits provide a practically implementable method to explore quantum walk based search algorithms with the aim of eventual real-world applications. We also provide a numerical analysis of a quantum walk based search along a twisted toroid family of graphs, which requires O($\sqrt{n}$ log($n$)) elementary 2-qubit quantum gate operations to find a marked node.
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