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dc.contributor.authorLiu, Ruilin
dc.contributor.authorV. Romero, Sebastián
dc.contributor.authorOregi, Izaskun
dc.contributor.authorOsaba, Eneko
dc.contributor.authorVillar-Rodriguez, Esther
dc.contributor.authorBan, Yue
dc.date.accessioned2022-12-14T15:10:13Z
dc.date.available2022-12-14T15:10:13Z
dc.date.issued2022-10-25
dc.identifier.citationLiu, Ruilin, Sebastián V. Romero, Izaskun Oregi, Eneko Osaba, Esther Villar-Rodriguez, and Yue Ban. 2022. "Digital Quantum Simulation and Circuit Learning for the Generation of Coherent States" Entropy 24, no. 11: 1529. https://doi.org/10.3390/e24111529en
dc.identifier.urihttp://hdl.handle.net/11556/1445
dc.description.abstractCoherent states, known as displaced vacuum states, play an important role in quantum information processing, quantum machine learning, and quantum optics. In this article, two ways to digitally prepare coherent states in quantum circuits are introduced. First, we construct the displacement operator by decomposing it into Pauli matrices via ladder operators, i.e., creation and annihilation operators. The high fidelity of the digitally generated coherent states is verified compared with the Poissonian distribution in Fock space. Secondly, by using Variational Quantum Algorithms, we choose different ansatzes to generate coherent states. The quantum resources—such as numbers of quantum gates, layers and iterations—are analyzed for quantum circuit learning. The simulation results show that quantum circuit learning can provide high fidelity on learning coherent states by choosing appropriate ansatzes.en
dc.description.sponsorshipThis research is funded by the QUANTEK project (ELKARTEK program from the Basque Government, expedient No. KK-2021/00070), the project “BRTA QUANTUM: Hacia una especialización armonizada en tecnologías cuánticas en BRTA” (expedient No. KK-2022/00041).en
dc.language.isoengen
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)en
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.titleDigital Quantum Simulation and Circuit Learning for the Generation of Coherent Statesen
dc.typearticleen
dc.identifier.doi10.3390/e24111529en
dc.rights.accessRightsopenAccessen
dc.subject.keywordsDigital quantum simulationen
dc.subject.keywordsQuantum circuit learningen
dc.subject.keywordsCoherent stateen
dc.identifier.essn1099-4300en
dc.issue.number11en
dc.journal.titleEntropyen
dc.page.initial1529en
dc.volume.number24en


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