Integrated GermaNIum quanTum tEchnology

Project Information

IGNITE

Grant agreement ID: 101069515

DOI

10.3030/101069515

Project closed

EC signature date 22 June 2022

Start date 1 July 2022

End date 31 December 2025

Funded under

• Digital, Industry and Space

Total cost

€ 4 996 815,75

EU contribution

€ 4 996 815,75

Coordinated by

TECHNISCHE UNIVERSITEIT DELFT
Netherlands

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

Documents, reports (6)

Report on electrical characterization

Systematic electrical characterisation of quick turn monitors will be carried out by the different characterisation teams according to specific expertise, scientific interest and existing collaborations. Definition of a set of common metrics and targets will facilitate knowledge exchange and accelerate progress.

Gate set protocol for fault tolerant operation

Randomized benchmarking measurements will be performed on quantum dot arrays in order to obtain insight into fidelity and its variability from qubit to qubit. On the theory side we are going to model electron-phonon, hyperfine, spin-orbit interaction and charge noise in order to understand their effect on qubit benchmarks. The goal is to enable the interpretation of experiments and to provide feedback and guidelines for optimized device design.

Qubit realization exceeding quality factors of 500

Characterization of spin coherence (T1,T2*,T2) and Rabi driving (optimial driving, role of spin-orbit coupling) in connection to qubit layout.

Feedback on qubit properties

WP3,4 will provide regular feedback on qubit benchmarking. This feedback will complete the learning cycle on materials and devices development and provide guidelines for design and process optimization.

Open-source shared training sets for quantum dot control machine learning algorithms

Use system-specific theoretical models produced in WP3 to generate labeled data sets for classically simulatable system sizes (< 12 quantum dots)* Develop geometric graph-based translationally invariant machine learning models and benchmark them on the theoretically generated data sets.

Annual report

Annual report with latest material developments and resources information. Also month 24 and 36.

Websites, patent fillings, videos etc. (1)

IGNITE website

Creation of IGNITE website: central platform for communication

Data Management Plan (1)

Data management plan

Elaboration of an efficient Data Management Plan

Other (1)

Germanium workshop and conference

Also in month 30.Coordinating the organization of the Germanium Day in Austria (IST) and 'The germanium quantum information route' conference (UKON) together with all IGNITE WPs, an event to showcase the milestones and achievements of IGNITE - (UKON, IST, all)

Publications

Peer reviewed articles (21)

Coherent spin qubit shuttling through germanium quantum dots

Author(s): Floor van Riggelen-Doelman, Chien-An Wang, Sander L. de Snoo, William I. L. Lawrie, Nico W. Hendrickx, Maximilian Rimbach-Russ, Amir Sammak, Giordano Scappucci, Corentin Déprez, Menno Veldhorst
Published in: Nature Communications, Issue 15, 2024, ISSN 2041-1723
Publisher: Springer Science and Business Media LLC
DOI: 10.1038/S41467-024-49358-Y

Codebase release 1.1 for QDsim

Author(s): Valentina Gualtieri; Charles Renshaw-Whitman; Vinicius Hernandes; Eliska Greplova
Published in: SciPost Physics Codebases, Issue 46-r1.1, 2025, ISSN 2949-804X
Publisher: SciPost Foundation
DOI: 10.21468/SCIPOSTPHYSCODEB.46-R1.1

"Crosstalk analysis in single hole-spin qubits within highly anisotropic <mml:math xmlns:mml=""http://www.w3.org/1998/Math/MathML""><mml:mi>g</mml:mi></mml:math> -tensors"

Author(s): Yaser Hajati; Irina Heinz; Guido Burkard
Published in: Physical Review Research, Issue 2, 2025, ISSN 2643-1564
Publisher: American Physical Society
DOI: 10.48550/ARXIV.2501.16464

Materials Science in Semiconductor Processing

Author(s): Shimura, Yosuke; Godfrin, Clement; Hikavyy, Andriy; Li, Roy; Aguilera, Juan; Katsaros, Georgios; Favia, Paola; Han, Han; Wan, Danny; De Greve, Kristiaan; Loo, Roger
Published in: Materials Science in Semiconductor Processing, Issue 108231, 2024, ISSN 1369-8001
Publisher: Pergamon Press
DOI: 10.1016/J.MSSP.2024.108231

Protocols to measure the non-Abelian Berry phase by pumping a spin qubit through a quantum-dot loop

Author(s): Baksa Kolok and András Pályi
Published in: Physical Review B, Issue 109, 2024, ISSN 2469-9969
Publisher: Purpose -led Publishing
DOI: 10.1103/PhysRevB.109.045438

Electrically driven spin resonance with bichromatic driving

Author(s): https://doi.org/10.1103/PhysRevB.106.155412
Published in: Physical Review B, Issue 106, 2022, ISSN 2469-9969
Publisher: Purpose-Led Publishing
DOI: 10.1103/PhysRevB.106.155412

Bichromatic Rabi Control of Semiconductor Qubits

Author(s): György, Chien-An Wang, Gábor Széchenyi, Floor van Riggelen-Doelman, William I. L. Lawrie, Nico W. Hendrickx, Amir Sammak, Giordano Scappucci, András Pályi, and Menno Veldhorst.
Published in: Physical Review Letters, Issue 132, 2024, ISSN 1079-7114
Publisher: American Physical Society
DOI: 10.1103/PHYSREVLETT.132.067001

Compressively Strained Epitaxial Ge Layers for Quantum Computing Applications

Author(s): Yosuke Shimura; Clement Godfrin; Andriy Hikavyy; Roy Li; Juan Aguilera; Georgios Katsaros; Paola Favia; Han Han; Danny Wan; Kristiaan De Greve; Roger Loo
Published in: ScienceDirect, Issue Volume 174, 108231, 2024, ISSN 1873-4081
Publisher: Elsevier
DOI: 10.1016/j.mssp.2024.108231

A quantum dot in germanium proximitized by a superconductor

Author(s): Lazar Lakic; William I. L. Lawrie; David van Driel; Lucas E. A. Stehouwer; Yao Su; Menno Veldhorst; Giordano Scappucci; Ferdinand Kuemmeth; Anasua Chatterjee
Published in: Nature Materials, Issue 24, 2025, ISSN 1476-4660
Publisher: Nature Materials
DOI: 10.48550/ARXIV.2405.02013

Electrically driven spin resonance with bichromatic driving

Author(s): György, Zoltán; Pályi, András; Széchenyi, Gábor
Published in: Physical Review B, Issue 106, 2022, ISSN 2469-9969
Publisher: American Physical Society
DOI: 10.48550/ARXIV.2206.00399

Dynamic sweet spot of driven flopping-mode spin qubits in planar quantum dots

Author(s): Yaser Hajati; Guido Burkard
Published in: Physical Review B, Issue 110, 2024, ISSN 2469-9969
Publisher: American Physical Society
DOI: 10.1103/PHYSREVB.110.245301

Science

Author(s): Chien-An Wang; Valentin John; Hanifa Tidjani; Cécile X. Yu; Alexander S. Ivlev; Corentin Déprez; Floor van Riggelen-Doelman; Benjamin D. Woods; Nico W. Hendrickx; William I. L. Lawrie; Lucas E. A. Stehouwer; Stefan D. Oosterhout; Amir Sammak; Mark Friesen; Giordano Scappucci; Sander L. de Snoo; Maximilian Rimbach-Russ; Francesco Borsoi; Menno Veldhorst
Published in: Science, Issue 6707, 2024, ISSN 0036-8075
Publisher: American Association for the Advancement of Science
DOI: 10.48550/ARXIV.2402.18382

Protocols to measure the non-Abelian Berry phase by pumping a spin qubit through a quantum-dot loop

Author(s): Kolok, Baksa; Pályi, András
Published in: Physical Review B, Issue 109, 2024, ISSN 2469-9969
Publisher: American Physical Society
DOI: 10.48550/ARXIV.2308.05455

QDsim: A user-friendly toolbox for simulating large-scale quantum dot devices

Author(s): Valentina Gualtieri; Charles Renshaw-Whitman; Vinicius Hernandes; Eliska Greplova
Published in: SciPost Physics Codebases, Issue 46, 2025, ISSN 2949-804X
Publisher: SciPost Foundation
DOI: 10.48550/ARXIV.2404.02712

Physical Review X

Author(s): Anantha S. Rao; Donovan Buterakos; Barnaby van Straaten; Valentin John; Cécile X. Yu; Stefan D. Oosterhout; Lucas Stehouwer; Giordano Scappucci; Menno Veldhorst; Francesco Borsoi; Justyna P. Zwolak
Published in: Physical Review X, Issue 15, 2025, ISSN 2160-3308
Publisher: American Physical Society
DOI: 10.48550/ARXIV.2411.12516

Autonomous bootstrapping of quantum dot devices

Author(s): Anton Zubchenko; Danielle Middlebrooks; Torbjørn Rasmussen; Lara Lausen; Ferdinand Kuemmeth; Anasua Chatterjee; Justyna P. Zwolak
Published in: Physical Review Applied, Issue 014072, 2025, ISSN 2331-7019
Publisher: American Physical Society
DOI: 10.48550/ARXIV.2407.20061

Engineering Ge Profiles in Si/SiGe Heterostructures for Increased Valley Splitting

Author(s): Lucas E. A. Stehouwer, Merrit P. Losert, Maia Rigot, Davide Degli Esposti, Sara Martí-Sánchez, Maximillian Rimbach-Russ, Jordi Arbiol, Mark Friesen, Giordano Scappucci
Published in: Nano Letters, Issue 25, 2025, ISSN 1530-6984
Publisher: American Chemical Society (ACS)
DOI: 10.1021/ACS.NANOLETT.5C02848

Exploiting strained epitaxial germanium for scaling low-noise spin qubits at the micrometre scale

Author(s): Lucas E. A. Stehouwer; Cécile X. Yu; Barnaby van Straaten; Alberto Tosato; Valentin John; Davide Degli Esposti; Asser Elsayed; Davide Costa; Stefan D. Oosterhout; Nico W. Hendrickx; Menno Veldhorst; Francesco Borsoi; Giordano Scappucci
Published in: Nature Materials, Issue 24, 2025, ISSN 1476-4660
Publisher: Nature Materials
DOI: 10.1038/S41563-025-02276-W

Classification and magic magnetic field directions for spin-orbit-coupled double quantum dots

Author(s): Valentin John, Francesco Borsoi, Nico W. Hendrickx, Giordano Scappucci, András Pályi, and Menno Veldhorst.
Published in: PHYSICAL REVIEW B, Issue 108, 2023, ISSN 2469-9950
Publisher: American Physical Society
DOI: 10.1103/PHYSREVB.108.245406

Parity-conserving Cooper-pair transport and ideal superconducting diode in planar germanium

Author(s): Menno Veldhorst, Andreas Pijpker, Francesco Borsoi, Zoltán György, D. Lane Smith, William I. L. Lawrie, Matteo Biondi, Nikolai A. Ziko, Amir Sammak, Giordano Scappucci
Published in: Nature Communications, Issue 169, 2024, ISSN 2041-1723
Publisher: Nature Publishing Group
DOI: 10.1038/S41467-023-44114-0

A crossbar chip for benchmarking semiconductor spin qubits

Author(s): Alberto Tosato, Asser Elsayed, Federico Poggiali, Lucas Erik Adriaan Stehouwer, Davide Costa, Karina Louise Hudson, Davide Degli Esposti, Giordano Scappucci
Published in: Nature Electronics, 2026, ISSN 2520-1131
Publisher: Springer Science and Business Media LLC
DOI: 10.1038/S41928-026-01569-5