Demonstration of Two-Dimensional Connectivity for a Scalable Error-Corrected Ion-Trap Quantum Processor Architecture

A major hurdle for building a large-scale quantum computer is increasing the number of qubits while maintaining connectivity between them. In trapped-ion devices, this connectivity can be achieved by moving subregisters consisting of a few ions across the processor. Here, we focus on an architecture...

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Autores: Valentini, M., Van Mourik, M.W., Butt, F., Wahl, J., Dietl, M., Pfeifer, M., Anmasser, F., Colombe, Y., Rössler, C., Holz, P.C., Blatt, R., Bermudez, A., Müller, M., Monz, T., Schindler, P.
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2025
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:dnet:digitalcsic_::8d70296d3fc4b225fb472bf09dfe7afa
Acesso em linha:http://hdl.handle.net/10261/427332
https://www.scopus.com/inward/record.uri?eid=2-s2.0-105022605887&doi=10.1103%2Fb9s1-6r44&partnerID=40&md5=c6e2b12aee0dfd56ff0846ff9c731983
Access Level:Acceso aberto
Palavra-chave:Architecture
Computer architecture
Error correction
Quantum channel
Quantum electronics
Quantum noise
Qubits
Array architecture
Coupling rate
Ion traps
Large scale quantum computers
Linear strings
Processor architectures
Quantum processors
Trapped ion
Two-dimensional
Two-dimensional lattices
Trapped ions
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spelling Demonstration of Two-Dimensional Connectivity for a Scalable Error-Corrected Ion-Trap Quantum Processor ArchitectureValentini, M.Van Mourik, M.W.Butt, F.Wahl, J.Dietl, M.Pfeifer, M.Anmasser, F.Colombe, Y.Rössler, C.Holz, P.C.Blatt, R.Bermudez, A.Müller, M.Monz, T.Schindler, P.ArchitectureComputer architectureError correctionQuantum channelQuantum electronicsQuantum noiseQubitsArray architectureCoupling rateIon trapsLarge scale quantum computersLinear stringsProcessor architecturesQuantum processorsTrapped ionTwo-dimensionalTwo-dimensional latticesTrapped ionsA major hurdle for building a large-scale quantum computer is increasing the number of qubits while maintaining connectivity between them. In trapped-ion devices, this connectivity can be achieved by moving subregisters consisting of a few ions across the processor. Here, we focus on an architecture, which we refer to as the quantum spring array (QSA), that is based on a rectangular two-dimensional lattice of linear strings of ions. Connectivity between adjacent ion strings can be controlled by adjusting their separation. This requires control of trapping potentials along two directions, one along the axis of the ion string and one radial to it. In this work, we investigate key elements of the QSA architecture along both directions: We show that the coupling rate between neighboring lattice sites increases with the number of ions per site and the motion of the coupled system can be resilient to electrical noise, both being key requisites for fast and high-fidelity quantum gate operations. The coherence of the coupling is assessed and an entangling gate between qubits stored in radially separated trapping regions is demonstrated. Moreover, we demonstrate control over radio-frequency signals to adjust the radial separation, and thus the coupling rate, between strings. We further present constructions for the implementation of parallelized, transversal gate operations, and map the QSA architecture to code primitives for fault-tolerant quantum error correction, providing a step towards a quantum processor architecture that is optimized for large-scale operation. © 2025 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.Peer reviewedAmerican Physical SocietyConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/427332https://www.scopus.com/inward/record.uri?eid=2-s2.0-105022605887&doi=10.1103%2Fb9s1-6r44&partnerID=40&md5=c6e2b12aee0dfd56ff0846ff9c731983reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésPhysical Review Xhttps://journals.aps.org/prx/pdf/10.1103/b9s1-6r44Síinfo:eu-repo/semantics/openAccessoai:dnet:digitalcsic_::8d70296d3fc4b225fb472bf09dfe7afa2026-05-22T06:33:51Z
dc.title.none.fl_str_mv Demonstration of Two-Dimensional Connectivity for a Scalable Error-Corrected Ion-Trap Quantum Processor Architecture
title Demonstration of Two-Dimensional Connectivity for a Scalable Error-Corrected Ion-Trap Quantum Processor Architecture
spellingShingle Demonstration of Two-Dimensional Connectivity for a Scalable Error-Corrected Ion-Trap Quantum Processor Architecture
Valentini, M.
Architecture
Computer architecture
Error correction
Quantum channel
Quantum electronics
Quantum noise
Qubits
Array architecture
Coupling rate
Ion traps
Large scale quantum computers
Linear strings
Processor architectures
Quantum processors
Trapped ion
Two-dimensional
Two-dimensional lattices
Trapped ions
title_short Demonstration of Two-Dimensional Connectivity for a Scalable Error-Corrected Ion-Trap Quantum Processor Architecture
title_full Demonstration of Two-Dimensional Connectivity for a Scalable Error-Corrected Ion-Trap Quantum Processor Architecture
title_fullStr Demonstration of Two-Dimensional Connectivity for a Scalable Error-Corrected Ion-Trap Quantum Processor Architecture
title_full_unstemmed Demonstration of Two-Dimensional Connectivity for a Scalable Error-Corrected Ion-Trap Quantum Processor Architecture
title_sort Demonstration of Two-Dimensional Connectivity for a Scalable Error-Corrected Ion-Trap Quantum Processor Architecture
dc.creator.none.fl_str_mv Valentini, M.
Van Mourik, M.W.
Butt, F.
Wahl, J.
Dietl, M.
Pfeifer, M.
Anmasser, F.
Colombe, Y.
Rössler, C.
Holz, P.C.
Blatt, R.
Bermudez, A.
Müller, M.
Monz, T.
Schindler, P.
author Valentini, M.
author_facet Valentini, M.
Van Mourik, M.W.
Butt, F.
Wahl, J.
Dietl, M.
Pfeifer, M.
Anmasser, F.
Colombe, Y.
Rössler, C.
Holz, P.C.
Blatt, R.
Bermudez, A.
Müller, M.
Monz, T.
Schindler, P.
author_role author
author2 Van Mourik, M.W.
Butt, F.
Wahl, J.
Dietl, M.
Pfeifer, M.
Anmasser, F.
Colombe, Y.
Rössler, C.
Holz, P.C.
Blatt, R.
Bermudez, A.
Müller, M.
Monz, T.
Schindler, P.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Architecture
Computer architecture
Error correction
Quantum channel
Quantum electronics
Quantum noise
Qubits
Array architecture
Coupling rate
Ion traps
Large scale quantum computers
Linear strings
Processor architectures
Quantum processors
Trapped ion
Two-dimensional
Two-dimensional lattices
Trapped ions
topic Architecture
Computer architecture
Error correction
Quantum channel
Quantum electronics
Quantum noise
Qubits
Array architecture
Coupling rate
Ion traps
Large scale quantum computers
Linear strings
Processor architectures
Quantum processors
Trapped ion
Two-dimensional
Two-dimensional lattices
Trapped ions
description A major hurdle for building a large-scale quantum computer is increasing the number of qubits while maintaining connectivity between them. In trapped-ion devices, this connectivity can be achieved by moving subregisters consisting of a few ions across the processor. Here, we focus on an architecture, which we refer to as the quantum spring array (QSA), that is based on a rectangular two-dimensional lattice of linear strings of ions. Connectivity between adjacent ion strings can be controlled by adjusting their separation. This requires control of trapping potentials along two directions, one along the axis of the ion string and one radial to it. In this work, we investigate key elements of the QSA architecture along both directions: We show that the coupling rate between neighboring lattice sites increases with the number of ions per site and the motion of the coupled system can be resilient to electrical noise, both being key requisites for fast and high-fidelity quantum gate operations. The coherence of the coupling is assessed and an entangling gate between qubits stored in radially separated trapping regions is demonstrated. Moreover, we demonstrate control over radio-frequency signals to adjust the radial separation, and thus the coupling rate, between strings. We further present constructions for the implementation of parallelized, transversal gate operations, and map the QSA architecture to code primitives for fault-tolerant quantum error correction, providing a step towards a quantum processor architecture that is optimized for large-scale operation. © 2025 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
publishDate 2025
dc.date.none.fl_str_mv 2025
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/427332
https://www.scopus.com/inward/record.uri?eid=2-s2.0-105022605887&doi=10.1103%2Fb9s1-6r44&partnerID=40&md5=c6e2b12aee0dfd56ff0846ff9c731983
url http://hdl.handle.net/10261/427332
https://www.scopus.com/inward/record.uri?eid=2-s2.0-105022605887&doi=10.1103%2Fb9s1-6r44&partnerID=40&md5=c6e2b12aee0dfd56ff0846ff9c731983
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Physical Review X
https://journals.aps.org/prx/pdf/10.1103/b9s1-6r44
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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