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 project’s aims, updates and results. It will be continuously updated throughout the project’s lifetime. Links to social media will be implemented as well.

Publications

Peer reviewed articles (68)

Quantum algorithms for approximate function loading

Author(s): Gabriel Marin-Sanchez, Javier Gonzalez-Conde, Mikel Sanz
Published in: Physical Review Research, Issue 5, 2023, ISSN 2643-1564
Publisher: American Physical Society (APS)
DOI: 10.1103/PHYSREVRESEARCH.5.033114

Quantum algorithm for Green's-function measurements in the Fermi-Hubbard model

Author(s): Gino Bishop, Dmitry Bagrets, Frank K. Wilhelm
Published in: Physical Review A, Issue 111, 2025, ISSN 2469-9926
Publisher: American Physical Society (APS)
DOI: 10.1103/PHYSREVA.111.062610

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

Subharmonic Control of a Fluxonium Qubit via a Purcell-Protected Flux Line

Author(s): J. Schirk, F. Wallner, L. Huang, I. Tsitsilin, N. Bruckmoser, L. Koch, D. Bunch, N.J. Glaser, G.B.P. Huber, M. Knudsen, G. Krylov, A. Marx, F. Pfeiffer, L. Richard, F.A. Roy, J.H. Romeiro, M. Singh, L
Published in: PRX Quantum, Issue 6, 2025, ISSN 2691-3399
Publisher: American Physical Society (APS)
DOI: 10.1103/YX15-JYL7

Exploring ground states of Fermi-Hubbard model on honeycomb lattices with counterdiabaticity

Author(s): Jialiang Tang, Ruoqian Xu, Yongcheng Ding, Xusheng Xu, Yue Ban, Man-Hong Yung, Axel Pérez-Obiol, Gloria Platero, Xi Chen
Published in: npj Quantum Materials, Issue 9, 2024, ISSN 2397-4648
Publisher: Springer Science and Business Media LLC
DOI: 10.1038/S41535-024-00697-5

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

Gradient-descent methods for fast quantum state tomography

Author(s): Akshay Gaikwad, Manuel Sebastian Torres, Shahnawaz Ahmed, Anton Frisk Kockum
Published in: Quantum Science and Technology, Issue 10, 2025, ISSN 2058-9565
Publisher: IOP Publishing
DOI: 10.1088/2058-9565/AE0BAA

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

Entanglement of photonic modes from a continuously driven two-level system

Author(s): Jiaying Yang, Ingrid Strandberg, Alejandro Vivas-Viaña, Akshay Gaikwad, Claudia Castillo-Moreno, Anton Frisk Kockum, Muhammad Asad Ullah, Carlos Sánchez Muñoz, Axel Martin Eriksson, Simone Gasparin
Published in: npj Quantum Information, Issue 11, 2025, ISSN 2056-6387
Publisher: Springer Science and Business Media LLC
DOI: 10.1038/S41534-025-00995-1

Quantum-Classical Autoencoder Architectures for End-to-End Radio Communication

Author(s): Zsolt I. Tabi, Bence Bakó, Dániel T. R. Nagy, Péter Vaderna, Zsófia Kallus, Péter Hága, Zoltán Zimborás
Published in: IEEE Access, Issue 13, 2025, ISSN 2169-3536
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/ACCESS.2025.3566207

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

Symmetry-enhanced counterdiabatic quantum algorithm for qudits

Author(s): Alberto Bottarelli, Mikel Garcia de Andoin, Pranav Chandarana, Koushik Paul, Xi Chen, Mikel Sanz, Philipp Hauke
Published in: Physical Review Research, Issue 7, 2025, ISSN 2643-1564
Publisher: American Physical Society (APS)
DOI: 10.1103/6LDG-3W1F

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

Residual-based attention Physics-informed Neural Networks for spatio-temporal ageing assessment of transformers operated in renewable power plants

Author(s): Ibai Ramirez, Joel Pino, David Pardo, Mikel Sanz, Luis del Rio, Alvaro Ortiz, Kateryna Morozovska, Jose I. Aizpurua
Published in: Engineering Applications of Artificial Intelligence, Issue 139, 2025, ISSN 0952-1976
Publisher: Elsevier BV
DOI: 10.1016/J.ENGAPPAI.2024.109556

Simulation of Quantum Computers: Review and Acceleration Opportunities

Author(s): Alessio Cicero, Mohammad Ali Maleki, Muhammad Waqar Azhar, Anton Frisk Kockum, Pedro Trancoso
Published in: ACM Transactions on Quantum Computing, Issue 7, 2025, ISSN 2643-6809
Publisher: Association for Computing Machinery (ACM)
DOI: 10.1145/3762672

Nearly quantum-limited microwave amplification via interfering degenerate stimulated emission in a single artificial atom

Author(s): Fahad Aziz, Kuan-Ting Lin, Ping-Yi Wen, null Samina, Yu-Chen Lin, Emely Weigand, Ching-Ping Lee, Yu-Ting Cheng, Yong Lu, Ching-Yeh Chen, Chin-Hsun Chien, Kai-Min Hsieh, Yu-Huan Huang, Haw-Tyng Huang,
Published in: npj Quantum Information, Issue 11, 2025, ISSN 2056-6387
Publisher: Springer Science and Business Media LLC
DOI: 10.1038/S41534-025-00993-3

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

Universal Pulses for Superconducting Qudit Ladder Gates

Author(s): Boxi Li, F.A. Cárdenas-López, Adrian Lupascu, Felix Motzoi
Published in: PRX Quantum, Issue 6, 2025, ISSN 2691-3399
Publisher: American Physical Society (APS)
DOI: 10.1103/9DXW-4C7Y

Quantum approximated cloning-assisted density matrix exponentiation

Author(s): Pablo Rodriguez-Grasa, Ruben Ibarrondo, Javier Gonzalez-Conde, Yue Ban, Patrick Rebentrost, Mikel Sanz
Published in: Physical Review Research, Issue 7, 2025, ISSN 2643-1564
Publisher: American Physical Society (APS)
DOI: 10.1103/PHYSREVRESEARCH.7.013264

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

Parameter optimization for the unimon qubit

Author(s): Rostislav Duda, Eric Hyyppä, Olli Mukkula, Vasilii Vadimov, Mikko Möttönen
Published in: Physical Review Research, Issue 7, 2025, ISSN 2643-1564
Publisher: American Physical Society (APS)
DOI: 10.1103/7YVD-Z6HK

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

Near-ground-state cooling in electromechanics using measurement-based feedback and a Josephson traveling-wave parametric amplifier

Author(s): Ewa Rej, Richa Cutting, Joe Depellette, Debopam Datta, Nils Tiencken, Joonas Govenius, Visa Vesterinen, Yulong Liu, Mika A. Sillanpää
Published in: Physical Review Applied, Issue 23, 2025, ISSN 2331-7019
Publisher: American Physical Society (APS)
DOI: 10.1103/PHYSREVAPPLIED.23.034009

Reinforcement learning pulses for transmon qubit entangling gates

Author(s): Ho Nam Nguyen, Felix Motzoi, Mekena Metcalf, K Birgitta Whaley, Marin Bukov, Markus Schmitt
Published in: Machine Learning: Science and Technology, Issue 5, 2024, ISSN 2632-2153
Publisher: IOP Publishing
DOI: 10.1088/2632-2153/AD4F4D

Impact of decoherence on the fidelity of quantum gates leaving the computational subspace

Author(s): Tahereh Abad, Yoni Schattner, Anton Frisk Kockum, Göran Johansson
Published in: Quantum, Issue 9, 2025, ISSN 2521-327X
Publisher: Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften
DOI: 10.22331/Q-2025-04-03-1684

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

Efficient quantum amplitude encoding of polynomial functions

Author(s): Javier Gonzalez-Conde, Thomas W. Watts, Pablo Rodriguez-Grasa, Mikel Sanz
Published in: Quantum, Issue 8, 2024, ISSN 2521-327X
Publisher: Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften
DOI: 10.22331/Q-2024-03-21-1297

Correlation measurement of propagating microwave photons at millikelvin

Author(s): Aarne Keränen, Qi-Ming Chen, András Gunyhó, Priyank Singh, Jian Ma, Visa Vesterinen, Joonas Govenius, Mikko Möttönen
Published in: Nature Communications, Issue 16, 2025, ISSN 2041-1723
Publisher: Springer Science and Business Media LLC
DOI: 10.1038/S41467-025-59230-2

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

Neural quantum kernels: Training quantum kernels with quantum neural networks

Author(s): Pablo Rodriguez-Grasa, Yue Ban, Mikel Sanz
Published in: Physical Review Research, Issue 7, 2025, ISSN 2643-1564
Publisher: American Physical Society (APS)
DOI: 10.1103/XPHB-X2G4

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

Deterministic Generation of Frequency-Bin-Encoded Microwave Photons

Author(s): Jiaying Yang, Maryam Khanahmadi, Ingrid Strandberg, Akshay Gaikwad, Claudia Castillo-Moreno, Anton Frisk Kockum, Muhammad Asad Ullah, Göran Johansson, Axel Martin Eriksson, Simone Gasparinetti
Published in: Physical Review Letters, Issue 134, 2025, ISSN 0031-9007
Publisher: American Physical Society (APS)
DOI: 10.1103/PHYSREVLETT.134.240803

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

Exponentiation of parametric Hamiltonians via unitary interpolation

Author(s): Michael Schilling, Francesco Preti, Matthias M. Müller, Tommaso Calarco, Felix Motzoi
Published in: Physical Review Research, Issue 6, 2024, ISSN 2643-1564
Publisher: American Physical Society (APS)
DOI: 10.1103/PHYSREVRESEARCH.6.043278

Parametric Multielement Coupling Architecture for Coherent and Dissipative Control of Superconducting Qubits

Author(s): G.B.P. Huber, F.A. Roy, L. Koch, I. Tsitsilin, J. Schirk, N.J. Glaser, N. Bruckmoser, C. Schweizer, J. Romeiro, G. Krylov, M. Singh, F.X. Haslbeck, M. Knudsen, A. Marx, F. Pfeiffer, C. Schneider, F. W
Published in: PRX Quantum, Issue 6, 2025, ISSN 2691-3399
Publisher: American Physical Society (APS)
DOI: 10.1103/9SHV-L4CX

Methods to achieve near-millisecond energy relaxation and dephasing times for a superconducting transmon qubit

Author(s): Mikko Tuokkola, Yoshiki Sunada, Heidi Kivijärvi, Jonatan Albanese, Leif Grönberg, Jukka-Pekka Kaikkonen, Visa Vesterinen, Joonas Govenius, Mikko Möttönen
Published in: Nature Communications, Issue 16, 2025, ISSN 2041-1723
Publisher: Springer Science and Business Media LLC
DOI: 10.1038/S41467-025-61126-0

Symmetry-informed transferability of optimal parameters in the quantum approximate optimization algorithm

Author(s): Isak Lyngfelt, Laura García-Álvarez
Published in: Physical Review A, Issue 111, 2025, ISSN 2469-9926
Publisher: American Physical Society (APS)
DOI: 10.1103/PHYSREVA.111.022418

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

Quantum Carleman linearization efficiency in nonlinear fluid dynamics

Author(s): Javier Gonzalez-Conde, Dylan Lewis, Sachin S. Bharadwaj, Mikel Sanz
Published in: Physical Review Research, Issue 7, 2025, ISSN 2643-1564
Publisher: American Physical Society (APS)
DOI: 10.1103/PHYSREVRESEARCH.7.023254

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

Optimal number of stabilizer measurement rounds in an idling surface code patch

Author(s): Áron Márton, János K. Asbóth
Published in: Quantum, Issue 9, 2025, ISSN 2521-327X
Publisher: Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften
DOI: 10.22331/Q-2025-06-12-1767

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

Efficient Hamiltonian simulation for solving option price dynamics

Author(s): Javier Gonzalez-Conde, Ángel Rodríguez-Rozas, Enrique Solano, Mikel Sanz
Published in: Physical Review Research, Issue 5, 2023, ISSN 2643-1564
Publisher: American Physical Society (APS)
DOI: 10.1103/PHYSREVRESEARCH.5.043220

Quantum SWAP gate realized with CZ and iSWAP gates in a superconducting architecture

Author(s): Christian Križan, Janka Biznárová, Liangyu Chen, Emil Hogedal, Amr Osman, Christopher W Warren, Sandoko Kosen, Hang-Xi Li, Tahereh Abad, Anuj Aggarwal, Marco Caputo, Jorge Fernández-Pendás, Aksha
Published in: New Journal of Physics, Issue 27, 2025, ISSN 1367-2630
Publisher: IOP Publishing
DOI: 10.1088/1367-2630/ADEBA7

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

Offset Charge Dependence of Measurement-Induced Transitions in Transmons

Author(s): Mathieu Féchant, Marie Frédérique Dumas, Denis Bénâtre, Nicolas Gosling, Philipp Lenhard, Martin Spiecker, Simon Geisert, Sören Ihssen, Wolfgang Wernsdorfer, Benjamin D’Anjou, Alexandre Blais,
Published in: Physical Review Letters, Issue 135, 2025, ISSN 0031-9007
Publisher: American Physical Society (APS)
DOI: 10.1103/YLJV-B4KJ

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

Subharmonic Control of a Fluxonium Qubit via a Purcell-Protected Flux Line

Author(s): J. Schirk, F. Wallner, L. Huang, I. Tsitsilin, N. Bruckmoser, L. Koch, D. Bunch, N.J. Glaser, G.B.P. Huber, M. Knudsen, G. Krylov, A. Marx, F. Pfeiffer, L. Richard, F.A. Roy, J.H. Romeiro, M. Singh, L
Published in: PRX Quantum, Issue 6, 2025, ISSN 2691-3399
Publisher: American Physical Society (APS)
DOI: 10.1103/YX15-JYL7

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

Individual solid-state nuclear spin qubits with coherence exceeding seconds

Author(s): James O’Sullivan, Jaime Travesedo, Louis Pallegoix, Zhiyuan W. Huang, Patrick Hogan, Alexandre S. May, Boris Yavkin, Sen Lin, Ren-Bao Liu, Thierry Chaneliere, Sylvain Bertaina, Philippe Goldner, Dan
Published in: Nature Physics, Issue 21, 2025, ISSN 1745-2473
Publisher: Springer Science and Business Media LLC
DOI: 10.1038/S41567-025-03049-7

Towards efficient quantum computing for quantum chemistry: reducing circuit complexity with transcorrelated and adaptive ansatz techniques

Author(s): Erika Magnusson, Aaron Fitzpatrick, Stefan Knecht, Martin Rahm, Werner Dobrautz
Published in: Faraday Discussions, Issue 254, 2024, ISSN 1359-6640
Publisher: Royal Society of Chemistry (RSC)
DOI: 10.1039/D4FD00039K

Quantum amplification and simulation of strong and ultrastrong coupling of light and matter

Author(s): Wei Qin, Anton Frisk Kockum, Carlos Sánchez Muñoz, Adam Miranowicz, Franco Nori
Published in: Physics Reports, Issue 1078, 2024, ISSN 0370-1573
Publisher: Elsevier BV
DOI: 10.1016/J.PHYSREP.2024.05.003

Hybrid quantum-classical reinforcement learning in latent observation spaces

Author(s): Nagy, Dániel T. R.; Czabán, Csaba; Bakó, Bence; Hága, Péter; Kallus, Zsófia; Zimborás, Zoltán
Published in: Quantum Machine Intelligence, Issue 7, 2025, ISSN 2524-4914
Publisher: Springer Nature
DOI: 10.48550/ARXIV.2410.18284

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