Open Superconducting Quantum Computers (OpenSuperQPlus)

Project Information

OpenSuperQPlus100

Grant agreement ID: 101113946

DOI

10.3030/101113946

EC signature date 3 April 2023

Start date 1 March 2023

End date 31 August 2026

Funded under

• Digital, Industry and Space

Total cost

€ 19 999 327,25

EU contribution

€ 19 999 327,25

Coordinated by

FORSCHUNGSZENTRUM JULICH GMBH
Germany

CORDIS provides links to public deliverables and publications of HORIZON projects.

Links to deliverables and publications from FP7 projects, as well as links to some specific result types such as dataset and software, are dynamically retrieved from OpenAIRE .

Deliverables

Websites, patent fillings, videos etc. (1)

Public project website

The website will inform the public about the projects aims, updates and results. It will be continuously updated throughout the projects lifetime. Links to social media will be implemented as well.

Publications

Peer reviewed articles (33)

Experimental error suppression in Cross-Resonance gates via multi-derivative pulse shaping

Author(s): Boxi Li; Tommaso Calarco; Felix Motzoi
Published in: NPJ Quantum Information, Issue 10, 2024, ISSN 2056-6387
Publisher: NPJ Quantum Information
DOI: 10.48550/arxiv.2303.01427

Satellite image classification with neural quantum kernels

Author(s): Pablo Rodriguez-Grasa, Robert Farzan-Rodriguez, Gabriele Novelli, Yue Ban, Mikel Sanz
Published in: Machine Learning: Science and Technology, Issue 6, 2025, ISSN 2632-2153
Publisher: IOP Publishing
DOI: 10.1088/2632-2153/ADA86C

Mitigation of interfacial dielectric loss in aluminum-on-silicon superconducting qubits

Author(s): Biznárová, Janka; Osman, Amr; Rehnman, Emil; Chayanun, Lert; Križan, Christian; Malmberg, Per; Rommel, Marcus; Warren, Christopher; Delsing, Per; Yurgens, August; Bylander, Jonas; Roudsari, Anita Fadavi
Published in: Quantum Information, Issue Vol.10, article number 78 (2024), 2023, ISSN 2056-6387
Publisher: npj Quantum Information
DOI: 10.48550/arxiv.2310.06797

High-fidelity robust qubit control by phase-modulated pulses

Author(s): Marko Kuzmanović, Isak Björkman, John J. McCord, Shruti Dogra, Gheorghe Sorin Paraoanu
Published in: Physical Review Research, Issue 6, 2024, ISSN 2643-1564
Publisher: American Physical Society (APS)
DOI: 10.1103/PhysRevResearch.6.013188

Mitigation of frequency collisions in superconducting quantum processors

Author(s): Amr Osman, Jorge Fernández-Pendás, Christopher Warren, Sandoko Kosen, Marco Scigliuzzo, Anton Frisk Kockum, Giovanna Tancredi, Anita Fadavi Roudsari, Jonas Bylander
Published in: Physical Review Research, Issue 5, 2023, ISSN 2643-1564
Publisher: American Physical Society (APS)
DOI: 10.1103/PhysRevResearch.5.043001

Entanglement transfer during quantum frequency conversion in gas-filled hollow-core fibers

Author(s): Tasio Gonzalez-Raya, Arturo Mena, Miriam Lazo, Luca Leggio, David Novoa, Mikel Sanz
Published in: APL Photonics, Issue 10, 2025, ISSN 2378-0967
Publisher: AIP Publishing
DOI: 10.1063/5.0246782

Reducing the error rate of a superconducting logical qubit using analog readout information

Author(s): Hany Ali, Jorge Marques, Ophelia Crawford, Joonas Majaniemi, Marc Serra-Peralta, David Byfield, Boris Varbanov, Barbara M. Terhal, Leonardo DiCarlo, Earl T. Campbell
Published in: Physical Review Applied, Issue 22, 2024, ISSN 2331-7019
Publisher: American Physical Society (APS)
DOI: 10.1103/PhysRevApplied.22.044031

Characterization of errors in a CNOT between surface code patches

Author(s): Bálint Domokos, Áron Márton, János K. Asbóth
Published in: Quantum, Issue 8, 2024, ISSN 2521-327X
Publisher: Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften
DOI: 10.22331/Q-2024-12-27-1577

Toward Real Chemical Accuracy on Current Quantum Hardware Through the Transcorrelated Method

Author(s): Werner Dobrautz; Igor O. Sokolov; Ke Liao; Pablo López Ríos; Martin Rahm; Ali Alavi; Ivano Tavernelli
Published in: Journal of Chemical Theory and Computation (1549-9618) vol.20(2024), Issue 20, 2024, ISSN 1549-9626
Publisher: ACS Publications
DOI: 10.1021/ACS.JCTC.4C00070

Shortcuts to adiabaticity in superconducting circuits for fast multi-partite state generation

Author(s): Francisco Andrés Cárdenas-López; Juan Carlos Retamal; Xi Chen
Published in: Communications Physics, Issue 6, 2023, ISSN 2399-3650
Publisher: Springer Science and Business Media LLC
DOI: 10.48550/arxiv.2302.07762

Observation of the Two-Photon Landau-Zener-Stückelberg-Majorana Effect

Author(s): Isak Björkman, Marko Kuzmanović, Gheorghe Sorin Paraoanu
Published in: Physical Review Letters, Issue 134, 2025, ISSN 0031-9007
Publisher: American Physical Society (APS)
DOI: 10.1103/PHYSREVLETT.134.060602

Coherent errors and readout errors in the surface code

Author(s): Áron Márton; János K. Asbóth
Published in: Quantum, p 1116 (2023), Issue 7, 2023, ISSN 2521-327X
Publisher: Quantum
DOI: 10.48550/arxiv.2303.04672

Mitigating noise in digital and digital–analog quantum computation

Author(s): Paula García-Molina, Ana Martin, Mikel Garcia de Andoin, Mikel Sanz
Published in: Communications Physics, Issue 7, 2024, ISSN 2399-3650
Publisher: Springer Science and Business Media LLC
DOI: 10.1038/s42005-024-01812-5

Wafer-scale CMOS-compatible graphene Josephson field-effect transistors

Author(s): Generalov, Andrey A.; Viisanen, Klaara L.; Senior, Jorden; Ma, Jian; Möttönen, Mikko; Prunnila, Mika; Bohuslavskyi, Heorhii
Published in: Applied Physics Letters, Issue 125, 2024, ISSN 1077-3118
Publisher: AIP Publishing
DOI: 10.1063/5.0203515

Compact inductor-capacitor resonators at sub-gigahertz frequencies

Author(s): Qi-Ming Chen; Priyank Singh; Rostislav Duda; Giacomo Catto; Aarne Keränen; Arman Alizadeh; Timm Mörstedt; Aashish Sah; András Gunyhó; Wei Liu; Mikko Möttönen
Published in: Physical review research, Issue 5, 2023, ISSN 2643-1564
Publisher: American Physical Sociey
DOI: 10.48550/arxiv.2304.12744

The Electron Density: A Fidelity Witness for Quantum Computation

Author(s): Mårten Skogh; Werner Dobrautz; Phalgun Lolur; Christopher Warren; Janka Biznárová; Amr Osman; Giovanna Tancredi; Jonas Bylander; Martin Rahm
Published in: Chemical Science, Issue 15, 2023, ISSN 2573-2293
Publisher: Royal Society of Chemistry
DOI: 10.1039/d3sc05269a

All-microwave spectroscopy and polarization of individual nuclear spins in a solid

Author(s): Jaime Travesedo, James O'Sullivan, Louis Pallegoix, Zhiyuan W. Huang, Patrick Hogan, Philippe Goldner, Thierry Chaneliere, Sylvain Bertaina, Daniel Estève, Patrick Abgrall, Denis Vion, Emmanuel Flurin, Patrice Bertet
Published in: Science Advances, Issue 11, 2025, ISSN 2375-2548
Publisher: American Association for the Advancement of Science (AAAS)
DOI: 10.1126/SCIADV.ADU0581

Dropout is all you need: robust two-qubit gate with reinforcement learning

Author(s): Xu, Tian-Niu; Ding, Yongcheng; Martín-Guerrero, José D.; Chen, Xi
Published in: Physical Review A, Issue 110, 2024, ISSN 2469-9934
Publisher: American Physical Society
DOI: 10.1103/PhysRevA.110.032614

Error mitigation in brainbox quantum autoencoders

Author(s): Joséphine Pazem, Mohammad H. Ansari
Published in: Scientific Reports, Issue 15, 2025, ISSN 2045-2322
Publisher: Springer Science and Business Media LLC
DOI: 10.1038/S41598-024-84171-Z

Signal Crosstalk in a Flip-Chip Quantum Processor

Author(s): Sandoko Kosen, Hang-Xi Li, Marcus Rommel, Robert Rehammar, Marco Caputo, Leif Grönberg, Jorge Fernández-Pendás, Anton Frisk Kockum, Janka Biznárová, Liangyu Chen, Christian Križan, Andreas Nylander, Amr Osman, Anita Fadavi Roudsari, Daryoush Shiri, Giovan
Published in: PRX Quantum, Issue 5, 2024, ISSN 2691-3399
Publisher: American Physical Society
DOI: 10.1103/PRXQuantum.5.030350

Single-shot readout of a superconducting qubit using a thermal detector

Author(s): András M. Gunyhó; Suman Kundu; Jian Ma; Wei Liu; Sakari Niemelä; Giacomo Catto; Vasilii Vadimov; Visa Vesterinen; Priyank Singh; Qiming Chen; Mikko Möttönen
Published in: Nature Electronics, Issue 7, 2024, ISSN 2520-1131
Publisher: Nature Electronics
DOI: 10.48550/arxiv.2303.03668

Using Bifluxon Tunneling to Protect the Fluxonium Qubit

Author(s): Waël Ardati, Sébastien Léger, Shelender Kumar, Vishnu Narayanan Suresh, Dorian Nicolas, Cyril Mori, Francesca D’Esposito, Tereza Vakhtel, Olivier Buisson
Published in: Physical Review X, Issue 14, 2024, ISSN 2160-3308
Publisher: APS
DOI: 10.1103/PHYSREVX.14.041014

Active Learning in Physics: From 101, to Progress, and Perspective

Author(s): Yongcheng Ding; José D. Martín‐Guerrero; Yolanda Vives‐Gilabert; Xi Chen
Published in: Advanced Quantum Technologies, Issue 22, 2023, ISSN 1613-6829
Publisher: Wiley Online Library
DOI: 10.48550/arxiv.2307.03899

Experimentally Verified, Fast Analytic, and Numerical Design of Superconducting Resonators in Flip-Chip Architectures

Author(s): Hang-Xi Li, Daryoush Shiri, Sandoko Kosen, Marcus Rommel, Lert Chayanun, Andreas Nylander, Robert Rehammar, Giovanna Tancredi, Marco Caputo, Kestutis Grigoras, Leif Grönberg, Joonas Govenius, Jonas Bylander
Published in: IEEE Transactions on Quantum Engineering, Issue 4, 2023, ISSN 2689-1808
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/TQE.2023.3302371

Photonic counterdiabatic quantum optimization algorithm

Author(s): Pranav Chandarana, Koushik Paul, Mikel Garcia-de-Andoin, Yue Ban, Mikel Sanz, Xi Chen
Published in: Communications Physics, Issue 7, 2024, ISSN 2399-3650
Publisher: Springer Science and Business Media LLC
DOI: 10.1038/S42005-024-01807-2

Coherent errors in stabilizer codes caused by quasistatic phase damping

Author(s): Dávid Pataki; Áron Márton; János K. Asbóth; András Pályi
Published in: Physic Review A, Issue 110, 2024, ISSN 2469-9934
Publisher: APS Publishing
DOI: 10.48550/arxiv.2401.04530

Applying quantum approximate optimization to the heterogeneous vehicle routing problem

Author(s): David Fitzek, Toheed Ghandriz, Leo Laine, Mats Granath, Anton Frisk Kockum
Published in: Scientific Reports, Issue 14, 2024, ISSN 2045-2322
Publisher: Springer Science and Business Media LLC
DOI: 10.1038/S41598-024-76967-W

Nonlinear-response theory for lossy superconducting quantum circuits

Author(s): V. Vadimov, M. Xu, J. T. Stockburger, J. Ankerhold, M. Möttönen
Published in: Physical Review Research, Issue 7, 2025, ISSN 2643-1564
Publisher: American Physical Society (APS)
DOI: 10.1103/PHYSREVRESEARCH.7.013317

Entangling Schrödinger’s cat states by bridging discrete- and continuous-variable encoding

Author(s): Daisuke Hoshi, Toshiaki Nagase, Sangil Kwon, Daisuke Iyama, Takahiko Kamiya, Shiori Fujii, Hiroto Mukai, Shahnawaz Ahmed, Anton Frisk Kockum, Shohei Watabe, Fumiki Yoshihara, Jaw-Shen Tsai
Published in: Nature Communications, Issue 16, 2025, ISSN 2041-1723
Publisher: Springer Science and Business Media LLC
DOI: 10.1038/S41467-025-56503-8

Loss and decoherence in superconducting circuits on silicon: Insights from electron spin resonance

Author(s): Aditya Jayaraman, Andrey V. Danilov, Jonas Bylander, and Sergey E. Kubatkin
Published in: Physical Review Applied, Issue 22, 2024, ISSN 2331-7019
Publisher: American Physical Society
DOI: 10.1103/PhysRevApplied.22.014030

Characterization of process-related interfacial dielectric loss in aluminum-on-silicon by resonator microwave measurements, materials analysis, and imaging

Author(s): Lert Chayanun, Janka Biznárová, Lunjie Zeng, Per Malmberg, Andreas Nylander, Amr Osman, Marcus Rommel, Pui Lam Tam, Eva Olsson, Per Delsing, August Yurgens, Jonas Bylander, Anita Fadavi Roudsari
Published in: APL Quantum, Issue 1, 2024, ISSN 2835-0103
Publisher: AIP Publishing
DOI: 10.1063/5.0208140

Cryogenic sensor enabling broad-band and traceable power measurements

Author(s): J.-P. Girard; R. E. Lake; W. Liu; R. Kokkoniemi; E. Visakorpi; J. Govenius; M. Möttönen
Published in: Review of Scientific Instruments, Issue 94, 2023, ISSN 1089-7623
Publisher: AIP Publishing
DOI: 10.48550/arxiv.2108.05101

Satellite-based entanglement distribution and quantum teleportation with continuous variables

Author(s): Tasio Gonzalez-Raya; Stefano Pirandola; Mikel Sanz
Published in: Communication Physics, Issue 7, 2024, ISSN 2399-3650
Publisher: Springer Science and Business Media LLC
DOI: 10.48550/arxiv.2303.17224

Monographic books (1)

Lecture Notes on Quantum Electrical Circuits

Author(s): Alessandro Ciani; David P. DiVincenzo; Barbara M. Terhal
Published in: TU Delft OPEN Publishing, 2024, ISBN 978-94-6366-815-6
Publisher: TU Delft OPEN Publishing
DOI: 10.48550/arxiv.2312.05329

Conference proceedings (1)

Formulation of the Electric Vehicle Charging and Routing Problem for a Hybrid Quantum-Classical Search Space Reduction Heuristic

Author(s): de Andoin, M. Garcia; Bottarelli, A.; Schmitt, S.; Oregi, I.; Hauke, P.; Sanz, M.
Published in: 2023 IEEE 26th International Conference on Intelligent Transportation Systems, 2024, ISSN 2153-0017
Publisher: IEEE
DOI: 10.48550/arxiv.2306.04414

Other (1)

Resource analysis of quantum algorithms for coarse-grained protein folding models

Author(s): Hanna Linn; Isak Brundin; Laura García-Álvarez; Göran Johansson
Published in: Physical Review Research, Issue 6, 2024, ISSN 2643-1564
Publisher: APS
DOI: 10.48550/arxiv.2311.04186