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JOURNALS // Uchenye Zapiski Kazanskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki // Archive

Uchenye Zapiski Kazanskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki, 2025 Volume 167, Book 1, Pages 115–124 (Mi uzku1698)

Quantum search in a dictionary using fingerprinting function

N. M. Salikhova

Kazan Federal University, Kazan, Russia

Abstract: The problem of searching for an element within a dictionary was considered. Over the past decades, various approaches, including classical and quantum algorithms, have been proposed to solve it. One possible solution is the method of quantum amplitude amplification, which underpins the well-known Grover algorithm and enables a quadratic speedup in the search process.
In this article, a new approach to searching for an element $w$ of length $m$ in a dictionary $V$ of size $n$ with the use of the quantum fingerprinting function was introduced. The developed algorithm has a query complexity of $O(\sqrt{n})$ and requires $O(\log n +\log m)$ qubits.

Keywords: quantum algorithm, searching for element in dictionary, quantum search, error-correcting code, fingerprinting function.

UDC: 519.7

Received: 15.11.2024
Accepted: 18.01.2025

DOI: 10.26907/2541-7746.2025.1.115-124



© Steklov Math. Inst. of RAS, 2025