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Limitations of quantum counting, nested quantum search and amplitude amplification and their potential to solve
Stefan Creemers1, Luis Fernando Pérez Armas2
1Université Catholique de Louvain, Center for Operations Research and Econometrics (CORE), Voie du Roman Pays 34, B-1348 Louvain-la-Neuve, Louvain-la-Neuve, Belgium.
None:
Several quantum algorithms have been proposed for solving discrete optimization problems. In this paper, we focus on the quantum counting algorithm (QCB) of Brassard G, Høyer P, Tapp A. 1998 Quantum counting. In Automata, languages and programming (eds KG Larsen, S Skyum, G Winksel), pp. 820-831. Berlin Heidelberg, Berlin, Heidelberg: Springer. (doi:10.1007/BFb0055105), the nested quantum search algorithm of Cerf NJ, Grover LK, Williams CP. 2000 Nested quantum search and structured problems. Phys. Rev. 61. (doi:10.1103/physreva.61.032303), and amplitude amplification. We discuss potential limitations of these quantum algorithms and investigate how they can be used to solve discrete optimization problems. Our goal is to provide a set of practical guidelines that can help researchers to effectively implement Grover-based quantum algorithms. This article is part of the theme issue 'Quantum theory and topology in models of decision making (Part 2)'.
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