Mixed Grover: A Hybrid Version to Improve Grover's Algorithm for Unstructured Database Search

In this article, we propose a new strategy to exploit Grover's algorithm for unstructured search problems. We first show that running Grover's routine with a reduced number of iterations but allowing several trials presents a complexity advantage while keeping the same success...

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Main Authors: Romain Piron, Muhammad Idham Habibie, Claire Goursaud
Format: Article
Language:English
Published: IEEE 2025-01-01
Series:IEEE Transactions on Quantum Engineering
Subjects:
Online Access:https://ieeexplore.ieee.org/document/10944580/
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author Romain Piron
Muhammad Idham Habibie
Claire Goursaud
author_facet Romain Piron
Muhammad Idham Habibie
Claire Goursaud
author_sort Romain Piron
collection DOAJ
description In this article, we propose a new strategy to exploit Grover&#x0027;s algorithm for unstructured search problems. We first show that running Grover&#x0027;s routine with a reduced number of iterations but allowing several trials presents a complexity advantage while keeping the same success probability. Then, by a theoretical analysis of the performance, we provide a generic procedure to parameterize the number of iterations <inline-formula><tex-math notation="LaTeX">$k$</tex-math></inline-formula> within one shot of Grover&#x0027;s algorithm and the maximum number of trials <inline-formula><tex-math notation="LaTeX">$T$</tex-math></inline-formula>, given a targeted success <inline-formula><tex-math notation="LaTeX">$p$</tex-math></inline-formula> and the size of the database <inline-formula><tex-math notation="LaTeX">$N$</tex-math></inline-formula>. At the end, we highlight that this new approach permits to reduce the computational time by at least 10&#x0025; for <inline-formula><tex-math notation="LaTeX">$p \geq 0.999$</tex-math></inline-formula> independently of the size of the database.
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spelling doaj-art-f2334ea3fa8d48e9bf3d66ee7071d2132025-08-20T02:18:28ZengIEEEIEEE Transactions on Quantum Engineering2689-18082025-01-01611310.1109/TQE.2025.355556210944580Mixed Grover: A Hybrid Version to Improve Grover&#x0027;s Algorithm for Unstructured Database SearchRomain Piron0https://orcid.org/0009-0001-1984-9659Muhammad Idham Habibie1Claire Goursaud2https://orcid.org/0000-0003-0971-9305INSA Lyon, Inria, CITI EA 3720, Universit&#x00E9; de Lyon, Lyon, FranceINSA Lyon, Inria, CITI EA 3720, Universit&#x00E9; de Lyon, Lyon, FranceINSA Lyon, Inria, CITI EA 3720, Universit&#x00E9; de Lyon, Lyon, FranceIn this article, we propose a new strategy to exploit Grover&#x0027;s algorithm for unstructured search problems. We first show that running Grover&#x0027;s routine with a reduced number of iterations but allowing several trials presents a complexity advantage while keeping the same success probability. Then, by a theoretical analysis of the performance, we provide a generic procedure to parameterize the number of iterations <inline-formula><tex-math notation="LaTeX">$k$</tex-math></inline-formula> within one shot of Grover&#x0027;s algorithm and the maximum number of trials <inline-formula><tex-math notation="LaTeX">$T$</tex-math></inline-formula>, given a targeted success <inline-formula><tex-math notation="LaTeX">$p$</tex-math></inline-formula> and the size of the database <inline-formula><tex-math notation="LaTeX">$N$</tex-math></inline-formula>. At the end, we highlight that this new approach permits to reduce the computational time by at least 10&#x0025; for <inline-formula><tex-math notation="LaTeX">$p \geq 0.999$</tex-math></inline-formula> independently of the size of the database.https://ieeexplore.ieee.org/document/10944580/Complexitygrover's algorithmhybrid quantum computingunstructured search
spellingShingle Romain Piron
Muhammad Idham Habibie
Claire Goursaud
Mixed Grover: A Hybrid Version to Improve Grover&#x0027;s Algorithm for Unstructured Database Search
IEEE Transactions on Quantum Engineering
Complexity
grover's algorithm
hybrid quantum computing
unstructured search
title Mixed Grover: A Hybrid Version to Improve Grover&#x0027;s Algorithm for Unstructured Database Search
title_full Mixed Grover: A Hybrid Version to Improve Grover&#x0027;s Algorithm for Unstructured Database Search
title_fullStr Mixed Grover: A Hybrid Version to Improve Grover&#x0027;s Algorithm for Unstructured Database Search
title_full_unstemmed Mixed Grover: A Hybrid Version to Improve Grover&#x0027;s Algorithm for Unstructured Database Search
title_short Mixed Grover: A Hybrid Version to Improve Grover&#x0027;s Algorithm for Unstructured Database Search
title_sort mixed grover a hybrid version to improve grover x0027 s algorithm for unstructured database search
topic Complexity
grover's algorithm
hybrid quantum computing
unstructured search
url https://ieeexplore.ieee.org/document/10944580/
work_keys_str_mv AT romainpiron mixedgroverahybridversiontoimprovegroverx0027salgorithmforunstructureddatabasesearch
AT muhammadidhamhabibie mixedgroverahybridversiontoimprovegroverx0027salgorithmforunstructureddatabasesearch
AT clairegoursaud mixedgroverahybridversiontoimprovegroverx0027salgorithmforunstructureddatabasesearch