--- DOAJ_listed: '1' OA_place: publisher OA_type: gold PlanS_conform: '1' _id: '21340' abstract: - lang: eng text: Equilibrium quantum systems are often described by a gas of weakly interacting normal modes. Bringing such systems far from equilibrium, however, can drastically enhance mode-to-mode interactions. Understanding the resulting liquid is a fundamental question for quantum statistical mechanics and a practical question for engineering driven quantum devices. To tackle this question, we probe the non-equilibrium kinetics of one-dimensional plasmons in a long chain of Josephson junctions. We introduce multimode spectroscopy to controllably study the departure from equilibrium, witnessing the evolution from pairwise coupling between plasma modes at weak driving to dramatic, high-order, cascaded couplings at strong driving. Scaling to many-mode drives, we stimulate interactions between hundreds of modes, resulting in near-continuum internal dynamics. Imaging the resulting non-equilibrium plasmon populations, we then resolve the nonlocal redistribution of energy in the response to a weak perturbation—an explicit verification of the emergence of a strongly interacting, non-equilibrium liquid of plasmons. acknowledged_ssus: - _id: NanoFab - _id: M-Shop acknowledgement: We thank V. Vitelli, M. Fruchart, and A. Burshstein for helpful input. We acknowledge technical support from the Nanofabrication Facility and the MIBA machine shop at IST Austria. This research was supported in part by grant NSF PHY-2309135 to the Kavli Institute for Theoretical Physics (KITP), by the Austrian Science Fund (FWF) SFB F86, and by the NOMIS foundation. article_number: eady7222 article_processing_charge: Yes article_type: original arxiv: 1 author: - first_name: Anton full_name: Bubis, Anton id: 1f6212b5-f795-11ec-9c0c-de4780302890 last_name: Bubis - first_name: Lucia full_name: Vigliotti, Lucia id: 539e1e1a-e604-11ee-a1df-f02b018e5c8c last_name: Vigliotti - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 - first_name: Andrew P full_name: Higginbotham, Andrew P id: 4AD6785A-F248-11E8-B48F-1D18A9856A87 last_name: Higginbotham orcid: 0000-0003-2607-2363 citation: ama: Bubis A, Vigliotti L, Serbyn M, Higginbotham AP. Non-equilibrium plasmon liquid in a Josephson junction chain. Science Advances. 2026;12(7). doi:10.1126/sciadv.ady7222 apa: Bubis, A., Vigliotti, L., Serbyn, M., & Higginbotham, A. P. (2026). Non-equilibrium plasmon liquid in a Josephson junction chain. Science Advances. American Association for the Advancement of Science. https://doi.org/10.1126/sciadv.ady7222 chicago: Bubis, Anton, Lucia Vigliotti, Maksym Serbyn, and Andrew P Higginbotham. “Non-Equilibrium Plasmon Liquid in a Josephson Junction Chain.” Science Advances. American Association for the Advancement of Science, 2026. https://doi.org/10.1126/sciadv.ady7222. ieee: A. Bubis, L. Vigliotti, M. Serbyn, and A. P. Higginbotham, “Non-equilibrium plasmon liquid in a Josephson junction chain,” Science Advances, vol. 12, no. 7. American Association for the Advancement of Science, 2026. ista: Bubis A, Vigliotti L, Serbyn M, Higginbotham AP. 2026. Non-equilibrium plasmon liquid in a Josephson junction chain. Science Advances. 12(7), eady7222. mla: Bubis, Anton, et al. “Non-Equilibrium Plasmon Liquid in a Josephson Junction Chain.” Science Advances, vol. 12, no. 7, eady7222, American Association for the Advancement of Science, 2026, doi:10.1126/sciadv.ady7222. short: A. Bubis, L. Vigliotti, M. Serbyn, A.P. Higginbotham, Science Advances 12 (2026). corr_author: '1' date_created: 2026-02-22T20:47:38Z date_published: 2026-02-13T00:00:00Z date_updated: 2026-02-24T07:25:34Z day: '13' ddc: - '530' department: - _id: MaSe - _id: AnHi - _id: GeKa doi: 10.1126/sciadv.ady7222 external_id: arxiv: - '2504.09721' file: - access_level: open_access checksum: 8402f322f8f0e858b1d9aac57e306e31 content_type: application/pdf creator: dernst date_created: 2026-02-24T07:23:32Z date_updated: 2026-02-24T07:23:32Z file_id: '21353' file_name: 2026_ScienceAdv_Bubis.pdf file_size: 2775975 relation: main_file success: 1 file_date_updated: 2026-02-24T07:23:32Z has_accepted_license: '1' intvolume: ' 12' issue: '7' language: - iso: eng month: '02' oa: 1 oa_version: Published Version publication: Science Advances publication_identifier: eissn: - 2375-2548 publication_status: published publisher: American Association for the Advancement of Science quality_controlled: '1' status: public title: Non-equilibrium plasmon liquid in a Josephson junction chain tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 12 year: '2026' ... --- _id: '19885' abstract: - lang: eng text: This .zip file contains the data to reproduce the figures and supplementary figures of "Automated All-RF Tuning for Spin Qubit Readout and Control" by Cornelius Carlsson and Jaime Saez-Mollejo et al. acknowledged_ssus: - _id: M-Shop - _id: NanoFab acknowledgement: 'The authors would like to thank Barnaby van Straaten, Jonas Schuff, Daniel Jirovec and Hanifa Tidjani for fruitful discussions. This research was supported by the Scientific Service Units of ISTA through resources provided by the MIBA Machine Shop and the Nanofabrication Facility. G.K. acknowledges support from the NOMIS Foundation, the HORIZON-RIA (project no. 101069515) and the FWF Projects (DOIs: 10.55776/F86 and 10.55776/I5060). N.A. acknowledges support from the European Research Council (grant agreement 948932), and the Royal Society (grant no. URF/R1/191150). This project received support from the US Army Research Office (ARO) under Award No. W911NF-24-2-0043. C.C. acknowledges support from the UKRI Doctoral Training Partnership related to EP/W524311/1 (project ref. 2887634).' article_processing_charge: No author: - first_name: Jaime full_name: Saez Mollejo, Jaime id: e0390f72-f6e0-11ea-865d-862393336714 last_name: Saez Mollejo citation: ama: Saez Mollejo J. Automated All-RF Tuning for Spin Qubit Readout and Control. 2025. doi:10.15479/AT:ISTA:19885 apa: Saez Mollejo, J. (2025). Automated All-RF Tuning for Spin Qubit Readout and Control. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:19885 chicago: Saez Mollejo, Jaime. “Automated All-RF Tuning for Spin Qubit Readout and Control.” Institute of Science and Technology Austria, 2025. https://doi.org/10.15479/AT:ISTA:19885. ieee: J. Saez Mollejo, “Automated All-RF Tuning for Spin Qubit Readout and Control.” Institute of Science and Technology Austria, 2025. ista: Saez Mollejo J. 2025. Automated All-RF Tuning for Spin Qubit Readout and Control, Institute of Science and Technology Austria, 10.15479/AT:ISTA:19885. mla: Saez Mollejo, Jaime. Automated All-RF Tuning for Spin Qubit Readout and Control. Institute of Science and Technology Austria, 2025, doi:10.15479/AT:ISTA:19885. short: J. Saez Mollejo, (2025). contributor: - contributor_type: researcher first_name: Cornelius last_name: Carlsson - contributor_type: researcher first_name: 'Federico ' last_name: Fedele - contributor_type: researcher first_name: Stefano last_name: Calcaterra - contributor_type: researcher first_name: ' Daniel ' last_name: Chrastina - contributor_type: researcher first_name: 'Giovanni ' last_name: Isella - contributor_type: researcher first_name: Georgios id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros orcid: 0000-0001-8342-202X - contributor_type: researcher first_name: Natalia last_name: Ares corr_author: '1' date_created: 2025-06-24T06:56:03Z date_published: 2025-06-01T00:00:00Z date_updated: 2025-07-01T07:19:26Z day: '01' ddc: - '530' department: - _id: GradSch - _id: GeKa doi: 10.15479/AT:ISTA:19885 file: - access_level: open_access checksum: eff1ae9e46599fdfab8da00a2ca3c289 content_type: application/x-zip-compressed creator: jsaezmol date_created: 2025-06-24T15:14:13Z date_updated: 2025-06-24T15:14:13Z file_id: '19893' file_name: DatasetsPaper.zip file_size: 3404814792 relation: main_file success: 1 - access_level: open_access checksum: 21840ceac04d677a799b8e5bd919804f content_type: text/plain creator: jsaezmol date_created: 2025-06-25T07:11:52Z date_updated: 2025-06-25T07:11:52Z file_id: '19899' file_name: README.txt file_size: 622 relation: main_file success: 1 file_date_updated: 2025-06-25T07:11:52Z has_accepted_license: '1' month: '06' oa: 1 oa_version: Published Version project: - _id: 34c0acea-11ca-11ed-8bc3-8775e10fd452 grant_number: '101069515' name: Integrated Germanium Quantum Technology - _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1 grant_number: I05060 name: High impedance circuit quantum electrodynamics with hole spins - _id: 34a66131-11ca-11ed-8bc3-a31681c6b03e grant_number: F8606 name: 'Center for Correlated Quantum Materials and Solid State Quantum Systems: Conventional and unconventional topological superconductors' publisher: Institute of Science and Technology Austria status: public title: Automated All-RF Tuning for Spin Qubit Readout and Control tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: research_data user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2025' ... --- OA_place: publisher OA_type: hybrid _id: '20594' abstract: - lang: eng text: (Scanning) transmission electron microscopy ((S)TEM) has significantly advanced materials science but faces challenges in correlating precise atomic structure information with the functional properties of devices due to its time-intensive nature. To address this, an analytical workflow is introduced for the holistic characterization, modelling, and simulation of device heterostructures. This workflow automates the experimental (S)TEM data analysis, providing an in-depth characterization of crystallographic information, 3D orientation, elemental composition, and strain distribution. It reduces a process that typically takes days for a trained human into an automatic routine solved in minutes. Utilizing a physics-guided artificial intelligence model, it generates representative descriptions of materials and samples. The workflow culminates in creating digital twins of systems limited with at least one axis of translational invariance –3D finite element and atomic models of millions of atoms–enabling simulations that provide crucial insights into device behavior in practical applications. Demonstrated with SiGe planar heterostructures for scalable spin qubits, the workflow links digital twins to theoretical properties, revealing how atomic structure impacts materials and functional properties such as spatially-resolved phononic or electronic characteristics, or (inverse) spin orbit lengths. The versatility of the workflow is demonstrated through its application to a wide array of materials systems, device configurations, and sample morphologies. acknowledgement: 'ICN2 acknowledged funding from Generalitat de Catalunya 2021SGR00457, 2021SGR00997 and 2021SGR01519. The authors thank support from the project AMaDE (PID2023-149158OB-C43), funded by MCIN/ AEI/10.13039/501100011033/. This study was part of the Advanced Materials programme and was supported by MCIN with funding from European Union NextGenerationEU (PRTR-C17.I1) and by Generalitat de Catalunya (In-CAEM Project). The authors acknowledged support from CSIC Interdisciplinary Thematic Platform (PTI+) on Quantum Technologies (PTI-QTEP+). This research work had been funded by the European Commission – NextGenerationEU (Regulation EU 2020/2094), through CSIC''s Quantum Technologies Platform (QTEP). ICN2 was supported by the Severo Ochoa program from Spanish MCIN / AEI (Grant No.: CEX2021-001214-S) and was funded by the CERCA Programme / Generalitat de Catalunya. Part of the present work had been performed in the framework of Universitat Autònoma de Barcelona Materials Science PhD program. I.P.H. acknowledged funding from AGAUR-FI scholarship (2023FI-00268) Joan Oró of the Secretariat of Universities of the Generalitat of Catalonia and the European SocialPlus Fund. M.B. acknowledged support from SUR Generalitat de Catalunya and the EU Social Fund; project ref. 2020 FI 00103. This study was supported by EU HORIZON INFRA TECH 2022 project IMPRESS (Ref.: 101094299). Authors acknowledged the use of instrumentation as well as the technical advice provided by the Joint Electron Microscopy Center at ALBA (JEMCA). ICN2 acknowledged funding from Grant IU16-014206 (METCAM-FIB) funded by the European Union through the European Regional Development Fund (ERDF), with the support of the Ministry of Research and Universities, Generalitat de Catalunya. ICN2 was a founding member of e-DREAM.[135] S.R. was also supported by MICIN with European funds NextGenerationEU (PRTRC17.I1) funded by Generalitat de Catalunya. P.O. acknowledged support from the EU MaX CoE (Grant No. 101093374), Grants No. PCI2022-134972-2 and No. PID2022-139776NB-C62 funded by the Spanish MCIN/AEI/10.13039/501100011033 and by the ERDF, A way of making Europe.The authors thank the Catalan Quantum Academy for support. The authors acknowledged Dámaso Torres for his support in designing the graphical material.' article_number: e06785 article_processing_charge: Yes (in subscription journal) article_type: original arxiv: 1 author: - first_name: Marc full_name: Botifoll, Marc last_name: Botifoll - first_name: Ivan full_name: Pinto-Huguet, Ivan last_name: Pinto-Huguet - first_name: Enzo full_name: Rotunno, Enzo last_name: Rotunno - first_name: Thomas full_name: Galvani, Thomas last_name: Galvani - first_name: Catalina full_name: Coll, Catalina last_name: Coll - first_name: Payam Habibzadeh full_name: Kavkani, Payam Habibzadeh last_name: Kavkani - first_name: Maria Chiara full_name: Spadaro, Maria Chiara last_name: Spadaro - first_name: Yann Michel full_name: Niquet, Yann Michel last_name: Niquet - first_name: Martin Børstad full_name: Eriksen, Martin Børstad last_name: Eriksen - first_name: Sara full_name: Martí-Sánchez, Sara last_name: Martí-Sánchez - first_name: Georgios full_name: Katsaros, Georgios id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros orcid: 0000-0001-8342-202X - first_name: Giordano full_name: Scappucci, Giordano last_name: Scappucci - first_name: Peter full_name: Krogstrup, Peter last_name: Krogstrup - first_name: Giovanni full_name: Isella, Giovanni last_name: Isella - first_name: Andreu full_name: Cabot, Andreu last_name: Cabot - first_name: Gonzalo full_name: Merino, Gonzalo last_name: Merino - first_name: Pablo full_name: Ordejón, Pablo last_name: Ordejón - first_name: Stephan full_name: Roche, Stephan last_name: Roche - first_name: Vincenzo full_name: Grillo, Vincenzo last_name: Grillo - first_name: Jordi full_name: Arbiol, Jordi last_name: Arbiol citation: ama: 'Botifoll M, Pinto-Huguet I, Rotunno E, et al. Artificial intelligence-assisted workflow for transmission electron microscopy: From data analysis automation to materials knowledge unveiling. Advanced Materials. 2025. doi:10.1002/adma.202506785' apa: 'Botifoll, M., Pinto-Huguet, I., Rotunno, E., Galvani, T., Coll, C., Kavkani, P. H., … Arbiol, J. (2025). Artificial intelligence-assisted workflow for transmission electron microscopy: From data analysis automation to materials knowledge unveiling. Advanced Materials. Wiley. https://doi.org/10.1002/adma.202506785' chicago: 'Botifoll, Marc, Ivan Pinto-Huguet, Enzo Rotunno, Thomas Galvani, Catalina Coll, Payam Habibzadeh Kavkani, Maria Chiara Spadaro, et al. “Artificial Intelligence-Assisted Workflow for Transmission Electron Microscopy: From Data Analysis Automation to Materials Knowledge Unveiling.” Advanced Materials. Wiley, 2025. https://doi.org/10.1002/adma.202506785.' ieee: 'M. Botifoll et al., “Artificial intelligence-assisted workflow for transmission electron microscopy: From data analysis automation to materials knowledge unveiling,” Advanced Materials. Wiley, 2025.' ista: 'Botifoll M, Pinto-Huguet I, Rotunno E, Galvani T, Coll C, Kavkani PH, Spadaro MC, Niquet YM, Eriksen MB, Martí-Sánchez S, Katsaros G, Scappucci G, Krogstrup P, Isella G, Cabot A, Merino G, Ordejón P, Roche S, Grillo V, Arbiol J. 2025. Artificial intelligence-assisted workflow for transmission electron microscopy: From data analysis automation to materials knowledge unveiling. Advanced Materials., e06785.' mla: 'Botifoll, Marc, et al. “Artificial Intelligence-Assisted Workflow for Transmission Electron Microscopy: From Data Analysis Automation to Materials Knowledge Unveiling.” Advanced Materials, e06785, Wiley, 2025, doi:10.1002/adma.202506785.' short: M. Botifoll, I. Pinto-Huguet, E. Rotunno, T. Galvani, C. Coll, P.H. Kavkani, M.C. Spadaro, Y.M. Niquet, M.B. Eriksen, S. Martí-Sánchez, G. Katsaros, G. Scappucci, P. Krogstrup, G. Isella, A. Cabot, G. Merino, P. Ordejón, S. Roche, V. Grillo, J. Arbiol, Advanced Materials (2025). date_created: 2025-11-02T23:01:35Z date_published: 2025-10-22T00:00:00Z date_updated: 2025-12-01T15:12:53Z day: '22' ddc: - '530' department: - _id: GeKa doi: 10.1002/adma.202506785 external_id: arxiv: - '2411.01024' isi: - '001597428400001' has_accepted_license: '1' isi: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1002/adma.202506785 month: '10' oa: 1 oa_version: Published Version publication: Advanced Materials publication_identifier: eissn: - 1521-4095 issn: - 0935-9648 publication_status: epub_ahead publisher: Wiley quality_controlled: '1' scopus_import: '1' status: public title: 'Artificial intelligence-assisted workflow for transmission electron microscopy: From data analysis automation to materials knowledge unveiling' tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2025' ... --- OA_place: publisher OA_type: hybrid PlanS_conform: '1' _id: '20706' abstract: - lang: eng text: We experimentally realize a quantum clock by using a charge sensor to count charges tunneling through a double quantum dot (DQD). Individual tunneling events are used as the clock’s ticks. We quantify the clock’s precision while measuring the power dissipated by the DQD and, separately, the charge sensor in both direct-current and radio-frequency readout modes. This allows us to probe the thermodynamic cost of creating ticks microscopically and recording them macroscopically. Our experiment is the first to explore the interplay between the entropy produced by a microscopic clockwork and its macroscopic measurement apparatus. We show that the latter contribution not only dwarfs the former but also unlocks greatly increased precision, because the measurement record can be exploited to optimally estimate time even when the DQD is at equilibrium. Our results suggest that the entropy produced by the amplification and measurement of a clock’s ticks, which has often been ignored in the literature, is the most important and fundamental thermodynamic cost of timekeeping at the quantum scale. acknowledgement: The authors thank Georgios Katsaros for providing the device for this experiment, and Tony Apollaro, Ilia Khomchenko, and Gerard Milburn for discussions. V. W. acknowledges funding from UK Research and Innovation Grant No. EP/T517811/1. F. M., M. H., and P. E. acknowledge funding from the European Research Council (Consolidator Grant “Cocoquest” No. 101043705). M. H. and P. E. acknowledge funding from the Austrian Federal Ministry of Education, Science, and Research via the Austrian Research Promotion Agency (FFG) through Quantum Austria. R. S. acknowledges funding from the Swiss National Science Foundation via an Ambizione Grant No. PZ00P2_185986. M. T. M. is supported by a Royal Society University Research Fellowship. N. A. acknowledges support from the European Research Council (Grant Agreement No, 948932) and the Royal Society (No. URF-R1-191150). This project is cofunded by the European Union (Quantum Flagship project ASPECTS, Grant Agreement No. 101080167) and UK Research and Innovation (UKRI). Views and opinions expressed are however those of the authors only and do not necessarily reflect those of the European Union, Research Executive Agency, or UKRI. Neither the European Union nor UKRI can be held responsible for them. article_number: '200407' article_processing_charge: Yes (in subscription journal) article_type: original arxiv: 1 author: - first_name: Vivek full_name: Wadhia, Vivek last_name: Wadhia - first_name: Florian full_name: Meier, Florian last_name: Meier - first_name: Federico full_name: Fedele, Federico last_name: Fedele - first_name: Ralph full_name: Silva, Ralph last_name: Silva - first_name: Nuriya full_name: Nurgalieva, Nuriya last_name: Nurgalieva - first_name: David L. full_name: Craig, David L. last_name: Craig - first_name: Daniel full_name: Jirovec, Daniel id: 4C473F58-F248-11E8-B48F-1D18A9856A87 last_name: Jirovec orcid: 0000-0002-7197-4801 - first_name: Jaime full_name: Saez Mollejo, Jaime id: e0390f72-f6e0-11ea-865d-862393336714 last_name: Saez Mollejo - first_name: Andrea full_name: Ballabio, Andrea last_name: Ballabio - first_name: Daniel full_name: Chrastina, Daniel last_name: Chrastina - first_name: Giovanni full_name: Isella, Giovanni last_name: Isella - first_name: Marcus full_name: Huber, Marcus last_name: Huber - first_name: Mark T. full_name: Mitchison, Mark T. last_name: Mitchison - first_name: Paul full_name: Erker, Paul last_name: Erker - first_name: Natalia full_name: Ares, Natalia last_name: Ares citation: ama: Wadhia V, Meier F, Fedele F, et al. Entropic costs of extracting classical ticks from a quantum clock. Physical Review Letters. 2025;135(20). doi:10.1103/5rtj-djfk apa: Wadhia, V., Meier, F., Fedele, F., Silva, R., Nurgalieva, N., Craig, D. L., … Ares, N. (2025). Entropic costs of extracting classical ticks from a quantum clock. Physical Review Letters. American Physical Society. https://doi.org/10.1103/5rtj-djfk chicago: Wadhia, Vivek, Florian Meier, Federico Fedele, Ralph Silva, Nuriya Nurgalieva, David L. Craig, Daniel Jirovec, et al. “Entropic Costs of Extracting Classical Ticks from a Quantum Clock.” Physical Review Letters. American Physical Society, 2025. https://doi.org/10.1103/5rtj-djfk. ieee: V. Wadhia et al., “Entropic costs of extracting classical ticks from a quantum clock,” Physical Review Letters, vol. 135, no. 20. American Physical Society, 2025. ista: Wadhia V, Meier F, Fedele F, Silva R, Nurgalieva N, Craig DL, Jirovec D, Saez Mollejo J, Ballabio A, Chrastina D, Isella G, Huber M, Mitchison MT, Erker P, Ares N. 2025. Entropic costs of extracting classical ticks from a quantum clock. Physical Review Letters. 135(20), 200407. mla: Wadhia, Vivek, et al. “Entropic Costs of Extracting Classical Ticks from a Quantum Clock.” Physical Review Letters, vol. 135, no. 20, 200407, American Physical Society, 2025, doi:10.1103/5rtj-djfk. short: V. Wadhia, F. Meier, F. Fedele, R. Silva, N. Nurgalieva, D.L. Craig, D. Jirovec, J. Saez Mollejo, A. Ballabio, D. Chrastina, G. Isella, M. Huber, M.T. Mitchison, P. Erker, N. Ares, Physical Review Letters 135 (2025). date_created: 2025-11-30T23:02:07Z date_published: 2025-11-14T00:00:00Z date_updated: 2025-12-01T15:39:14Z day: '14' ddc: - '530' department: - _id: GeKa doi: 10.1103/5rtj-djfk external_id: arxiv: - '2502.00096' isi: - '001619305100001' file: - access_level: open_access checksum: e5c89b95d0f52a38f2d2ada3483f3576 content_type: application/pdf creator: dernst date_created: 2025-12-01T08:28:00Z date_updated: 2025-12-01T08:28:00Z file_id: '20718' file_name: 2025_PhysReviewLetters_Wadhia.pdf file_size: 444198 relation: main_file success: 1 file_date_updated: 2025-12-01T08:28:00Z has_accepted_license: '1' intvolume: ' 135' isi: 1 issue: '20' language: - iso: eng month: '11' oa: 1 oa_version: Published Version publication: Physical Review Letters publication_identifier: eissn: - 1079-7114 issn: - 0031-9007 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Entropic costs of extracting classical ticks from a quantum clock tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 135 year: '2025' ... --- OA_place: publisher OA_type: hybrid PlanS_conform: '1' _id: '20730' abstract: - lang: eng text: Radio-frequency measurements could satisfy DiVincenzo’s readout criterion in future large-scale solid-state quantum processors, as they allow for high bandwidths and frequency multiplexing. However, the scalability potential of this readout technique can only be leveraged if quantum device tuning is performed using exclusively radio-frequency measurements, that is, without resorting to current measurements. We demonstrate an algorithm that performs automatic coarse tuning of double quantum dots with only radio-frequency measurements by exploiting their bandwidth and impedance matching. The tuning was completed within a few minutes with minimal prior knowledge about the device. Our results show that it is possible to eliminate the need for transport measurements for quantum-dot tuning, paving the way for more scalable device architectures. acknowledged_ssus: - _id: NanoFab acknowledgement: We thank Nicholas Sim for providing help with the rf cavities and David Craig for his feedback on the paper. This work was supported by the Royal Society (URF-R1-191150), the EPSRC National Quantum Technology Hub in Networked Quantum Information Technology (EP/M013243/1), Quantum Technology Capital (EP/N014995/1), EPSRC Platform Grant (EP/R029229/1), the European Research Council (Grant Agreement 948932), the Scientific Service Units of IST Austria through resources provided by the nanofabrication facility, the FWF-P 30207, and FWF-I 05060 projects, and Grant No. FQXi-IAF19-01 from the Foundational Questions Institute Fund, a donor-advised fund of Silicon Valley Community Foundation. article_number: '054030' article_processing_charge: Yes (in subscription journal) article_type: original author: - first_name: Barnaby full_name: Van Straaten, Barnaby last_name: Van Straaten - first_name: Federico full_name: Fedele, Federico last_name: Fedele - first_name: Florian full_name: Vigneau, Florian last_name: Vigneau - first_name: Joseph full_name: Hickie, Joseph last_name: Hickie - first_name: Daniel full_name: Jirovec, Daniel id: 4C473F58-F248-11E8-B48F-1D18A9856A87 last_name: Jirovec orcid: 0000-0002-7197-4801 - first_name: Andrea full_name: Ballabio, Andrea last_name: Ballabio - first_name: Daniel full_name: Chrastina, Daniel last_name: Chrastina - first_name: Giovanni full_name: Isella, Giovanni last_name: Isella - first_name: Georgios full_name: Katsaros, Georgios id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros orcid: 0000-0001-8342-202X - first_name: Natalia full_name: Ares, Natalia last_name: Ares citation: ama: Van Straaten B, Fedele F, Vigneau F, et al. All-rf-based coarse-tuning algorithm for quantum devices using machine learning. Physical Review Applied. 2025;24(5). doi:10.1103/v11m-dbhm apa: Van Straaten, B., Fedele, F., Vigneau, F., Hickie, J., Jirovec, D., Ballabio, A., … Ares, N. (2025). All-rf-based coarse-tuning algorithm for quantum devices using machine learning. Physical Review Applied. American Physical Society. https://doi.org/10.1103/v11m-dbhm chicago: Van Straaten, Barnaby, Federico Fedele, Florian Vigneau, Joseph Hickie, Daniel Jirovec, Andrea Ballabio, Daniel Chrastina, Giovanni Isella, Georgios Katsaros, and Natalia Ares. “All-Rf-Based Coarse-Tuning Algorithm for Quantum Devices Using Machine Learning.” Physical Review Applied. American Physical Society, 2025. https://doi.org/10.1103/v11m-dbhm. ieee: B. Van Straaten et al., “All-rf-based coarse-tuning algorithm for quantum devices using machine learning,” Physical Review Applied, vol. 24, no. 5. American Physical Society, 2025. ista: Van Straaten B, Fedele F, Vigneau F, Hickie J, Jirovec D, Ballabio A, Chrastina D, Isella G, Katsaros G, Ares N. 2025. All-rf-based coarse-tuning algorithm for quantum devices using machine learning. Physical Review Applied. 24(5), 054030. mla: Van Straaten, Barnaby, et al. “All-Rf-Based Coarse-Tuning Algorithm for Quantum Devices Using Machine Learning.” Physical Review Applied, vol. 24, no. 5, 054030, American Physical Society, 2025, doi:10.1103/v11m-dbhm. short: B. Van Straaten, F. Fedele, F. Vigneau, J. Hickie, D. Jirovec, A. Ballabio, D. Chrastina, G. Isella, G. Katsaros, N. Ares, Physical Review Applied 24 (2025). date_created: 2025-12-07T23:02:01Z date_published: 2025-11-01T00:00:00Z date_updated: 2025-12-09T14:49:35Z day: '01' ddc: - '530' department: - _id: GeKa doi: 10.1103/v11m-dbhm file: - access_level: open_access checksum: 9906b32c7e3c79ed13d05ef88ff15586 content_type: application/pdf creator: dernst date_created: 2025-12-09T13:34:38Z date_updated: 2025-12-09T13:34:38Z file_id: '20748' file_name: 2025_PhysReviewApplied_vanStraaten.pdf file_size: 5754118 relation: main_file success: 1 file_date_updated: 2025-12-09T13:34:38Z has_accepted_license: '1' intvolume: ' 24' issue: '5' language: - iso: eng month: '11' oa: 1 oa_version: Published Version project: - _id: 2641CE5E-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P30207 name: Hole spin orbit qubits in Ge quantum wells - _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1 grant_number: I05060 name: High impedance circuit quantum electrodynamics with hole spins publication: Physical Review Applied publication_identifier: eissn: - 2331-7019 publication_status: published publisher: American Physical Society quality_controlled: '1' related_material: record: - id: '20750' relation: research_data status: public scopus_import: '1' status: public title: All-rf-based coarse-tuning algorithm for quantum devices using machine learning tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 24 year: '2025' ... --- OA_place: publisher OA_type: gold PlanS_conform: '1' _id: '20733' abstract: - lang: eng text: The conversion of thermal energy into work is usually more efficient in the slow-driving regime, where the power output is vanishingly small. Efficient work extraction for fast-driving protocols remains an outstanding challenge at the nanoscale, where fluctuations play a significant role. In this Letter, we use a quantum-dot Szilard engine to extract work from thermal fluctuations with maximum efficiency over two decades of driving speed. We design and implement a family of optimized protocols ranging from the slow- to the fast-driving regime, and we measure the engine's efficiency as well as the mean and variance of its power output in each case. These optimized protocols exhibit significant improvements in power and efficiency compared to the naive approach. Our results also show that, when optimizing for efficiency, boosting the power output of a Szilard engine inevitably comes at the cost of increased power fluctuations. acknowledgement: We thank Georgios Katsaros for providing the device for this experiment. K.A. and N.A. acknowledge the support provided by funding from the Engineering and Physical Sciences Research Council IAA (Grant No. EP/X525777/1). N.A. acknowledges support from the European Research Council (Grant Agreement No. 948932) and the Royal Society (URF-R1-191150). A.R. is supported by the Swiss National Science Foundation through a Postdoc. Mobility (Grant No. P500PT 225461). M.T.M. is supported by a Royal Society University Research Fellowship. M.P.-L. is supported by the Grant RYC2022-036958-I funded by the Spanish MICIU/AEI/10.13039/501100011033 and by ESF+. This project is cofunded by the European Union and UK Research & Innovation (Quantum Flagship project ASPECTS, Grant Agreement No. 101080167). However, views and opinions expressed are those of the authors only and do not necessarily reflect those of the European Union, Research Executive Agency, or UK Research & Innovation. Neither the European Union nor UK Research & Innovation can be held responsible for them. article_number: L032017 article_processing_charge: Yes article_type: letter_note arxiv: 1 author: - first_name: Kushagra full_name: Aggarwal, Kushagra last_name: Aggarwal - first_name: Alberto full_name: Rolandi, Alberto last_name: Rolandi - first_name: Yikai full_name: Yang, Yikai last_name: Yang - first_name: Joseph full_name: Hickie, Joseph last_name: Hickie - first_name: Daniel full_name: Jirovec, Daniel id: 4C473F58-F248-11E8-B48F-1D18A9856A87 last_name: Jirovec orcid: 0000-0002-7197-4801 - first_name: Andrea full_name: Ballabio, Andrea last_name: Ballabio - first_name: Daniel full_name: Chrastina, Daniel last_name: Chrastina - first_name: Giovanni full_name: Isella, Giovanni last_name: Isella - first_name: Mark T. full_name: Mitchison, Mark T. last_name: Mitchison - first_name: Martí full_name: Perarnau-Llobet, Martí last_name: Perarnau-Llobet - first_name: Natalia full_name: Ares, Natalia last_name: Ares citation: ama: Aggarwal K, Rolandi A, Yang Y, et al. Rapid optimal work extraction from a quantum-dot information engine. Physical Review Research. 2025;7(3). doi:10.1103/q3dx-kyqj apa: Aggarwal, K., Rolandi, A., Yang, Y., Hickie, J., Jirovec, D., Ballabio, A., … Ares, N. (2025). Rapid optimal work extraction from a quantum-dot information engine. Physical Review Research. American Physical Society. https://doi.org/10.1103/q3dx-kyqj chicago: Aggarwal, Kushagra, Alberto Rolandi, Yikai Yang, Joseph Hickie, Daniel Jirovec, Andrea Ballabio, Daniel Chrastina, et al. “Rapid Optimal Work Extraction from a Quantum-Dot Information Engine.” Physical Review Research. American Physical Society, 2025. https://doi.org/10.1103/q3dx-kyqj. ieee: K. Aggarwal et al., “Rapid optimal work extraction from a quantum-dot information engine,” Physical Review Research, vol. 7, no. 3. American Physical Society, 2025. ista: Aggarwal K, Rolandi A, Yang Y, Hickie J, Jirovec D, Ballabio A, Chrastina D, Isella G, Mitchison MT, Perarnau-Llobet M, Ares N. 2025. Rapid optimal work extraction from a quantum-dot information engine. Physical Review Research. 7(3), L032017. mla: Aggarwal, Kushagra, et al. “Rapid Optimal Work Extraction from a Quantum-Dot Information Engine.” Physical Review Research, vol. 7, no. 3, L032017, American Physical Society, 2025, doi:10.1103/q3dx-kyqj. short: K. Aggarwal, A. Rolandi, Y. Yang, J. Hickie, D. Jirovec, A. Ballabio, D. Chrastina, G. Isella, M.T. Mitchison, M. Perarnau-Llobet, N. Ares, Physical Review Research 7 (2025). date_created: 2025-12-07T23:02:02Z date_published: 2025-07-01T00:00:00Z date_updated: 2025-12-09T14:07:49Z day: '01' ddc: - '530' department: - _id: GeKa doi: 10.1103/q3dx-kyqj external_id: arxiv: - '2412.06916' file: - access_level: open_access checksum: 66f2b572a36a7b5fe611a7639a8b6f12 content_type: application/pdf creator: dernst date_created: 2025-12-09T14:05:56Z date_updated: 2025-12-09T14:05:56Z file_id: '20753' file_name: 2025_PhysReviewResearch_Aggarwal.pdf file_size: 536624 relation: main_file success: 1 file_date_updated: 2025-12-09T14:05:56Z has_accepted_license: '1' intvolume: ' 7' issue: '3' language: - iso: eng month: '07' oa: 1 oa_version: Published Version publication: Physical Review Research publication_identifier: eissn: - 2643-1564 publication_status: published publisher: American Physical Society quality_controlled: '1' related_material: link: - relation: software url: https://doi.org/10.5281/zenodo.14516009 scopus_import: '1' status: public title: Rapid optimal work extraction from a quantum-dot information engine tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 7 year: '2025' ... --- OA_place: repository OA_type: green _id: '20750' article_processing_charge: No author: - first_name: Barnaby full_name: Van Straaten, Barnaby last_name: Van Straaten - first_name: Federico full_name: Fedele, Federico last_name: Fedele - first_name: Florian full_name: Vigneau, Florian last_name: Vigneau - first_name: Joseph full_name: Hickie, Joseph last_name: Hickie - first_name: Daniel full_name: Jirovec, Daniel id: 4C473F58-F248-11E8-B48F-1D18A9856A87 last_name: Jirovec orcid: 0000-0002-7197-4801 - first_name: Daniel full_name: Chrastina, Daniel last_name: Chrastina - first_name: Giovanni full_name: Isella, Giovanni last_name: Isella - first_name: Natalia full_name: Ares, Natalia last_name: Ares citation: ama: Van Straaten B, Fedele F, Vigneau F, et al. All rf-based tuning algorithm for quantum devices using machine learning. 2025. doi:10.5281/ZENODO.17352653 apa: Van Straaten, B., Fedele, F., Vigneau, F., Hickie, J., Jirovec, D., Chrastina, D., … Ares, N. (2025). All rf-based tuning algorithm for quantum devices using machine learning. Zenodo. https://doi.org/10.5281/ZENODO.17352653 chicago: Van Straaten, Barnaby, Federico Fedele, Florian Vigneau, Joseph Hickie, Daniel Jirovec, Daniel Chrastina, Giovanni Isella, and Natalia Ares. “All Rf-Based Tuning Algorithm for Quantum Devices Using Machine Learning.” Zenodo, 2025. https://doi.org/10.5281/ZENODO.17352653. ieee: B. Van Straaten et al., “All rf-based tuning algorithm for quantum devices using machine learning.” Zenodo, 2025. ista: Van Straaten B, Fedele F, Vigneau F, Hickie J, Jirovec D, Chrastina D, Isella G, Ares N. 2025. All rf-based tuning algorithm for quantum devices using machine learning, Zenodo, 10.5281/ZENODO.17352653. mla: Van Straaten, Barnaby, et al. All Rf-Based Tuning Algorithm for Quantum Devices Using Machine Learning. Zenodo, 2025, doi:10.5281/ZENODO.17352653. short: B. Van Straaten, F. Fedele, F. Vigneau, J. Hickie, D. Jirovec, D. Chrastina, G. Isella, N. Ares, (2025). date_created: 2025-12-09T13:36:29Z date_published: 2025-10-14T00:00:00Z date_updated: 2025-12-09T14:49:36Z day: '14' ddc: - '530' department: - _id: GeKa doi: 10.5281/ZENODO.17352653 has_accepted_license: '1' main_file_link: - open_access: '1' url: https://doi.org/10.5281/zenodo.17352653 month: '10' oa: 1 oa_version: Published Version publisher: Zenodo related_material: record: - id: '20730' relation: used_in_publication status: public status: public title: All rf-based tuning algorithm for quantum devices using machine learning tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: research_data_reference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2025' ... --- DOAJ_listed: '1' OA_place: publisher OA_type: hybrid PlanS_conform: '1' _id: '19597' abstract: - lang: eng text: Superconductor–semiconductor hybrid systems play a crucial role in realizing nanoscale quantum devices, including hybrid qubits, Majorana bound states, and Kitaev chains. For such hybrid devices, subgap states play a prominent role in their operation. In this paper, we study these subgap states via Coulomb and tunneling spectroscopy through a superconducting island defined in a semiconductor nanowire fully coated by a superconductor. We systematically explore regimes ranging from an almost decoupled island to the open configuration. In the weak-coupling regime, the experimental observations are very similar in the absence of a magnetic field and when one flux quantum pierces the superconducting shell. Conversely, in the strong-coupling regime, significant distinctions emerge between the two cases. We attribute this distinct behavior to the existence of subgap states at one flux quantum, which become observable only for sufficiently strong coupling to the leads. We support our interpretation using a simple model to describe transport through the island. Our study highlights the importance of studying a broad range of tunnel couplings for understanding the rich physics of hybrid devices. acknowledged_ssus: - _id: M-Shop - _id: NanoFab acknowledgement: This research was supported by the Scientific Service Units of ISTA, through resources provided by the MIBA Machine Shop and the Nanofabrication facility. This research and related results were made possible with the support of the FWF Project with DOI10.55776/F86. We acknowledge support from the European Research Council under the European Unions Horizon 2020 research and innovation programme under Grant Agreement No. 856526, the Swedish Research Council under Grant Agreement No. 2020-03412, the Spanish Comunidad de Madrid (CM) “Talento Program” (Project No. 2022-T1/IND-24070), the Spanish Ministry of Science, innovation, and Universities through Grant PID2022-140552NA-I00 and NanoLund. article_number: '023022' article_processing_charge: Yes article_type: original author: - first_name: Marco full_name: Valentini, Marco id: C0BB2FAC-D767-11E9-B658-BC13E6697425 last_name: Valentini - first_name: Rubén Seoane full_name: Souto, Rubén Seoane last_name: Souto - first_name: Maksim full_name: Borovkov, Maksim id: 1fd0975f-8b61-11ed-b69e-d149334f28c5 last_name: Borovkov - first_name: Peter full_name: Krogstrup, Peter last_name: Krogstrup - first_name: Yigal full_name: Meir, Yigal last_name: Meir - first_name: Martin full_name: Leijnse, Martin last_name: Leijnse - first_name: Jeroen full_name: Danon, Jeroen last_name: Danon - first_name: Georgios full_name: Katsaros, Georgios id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros orcid: 0000-0001-8342-202X citation: ama: 'Valentini M, Souto RS, Borovkov M, et al. Subgap transport in superconductor-semiconductor hybrid islands: Weak and strong coupling regimes. Physical Review Research. 2025;7(2). doi:10.1103/PhysRevResearch.7.023022' apa: 'Valentini, M., Souto, R. S., Borovkov, M., Krogstrup, P., Meir, Y., Leijnse, M., … Katsaros, G. (2025). Subgap transport in superconductor-semiconductor hybrid islands: Weak and strong coupling regimes. Physical Review Research. American Physical Society. https://doi.org/10.1103/PhysRevResearch.7.023022' chicago: 'Valentini, Marco, Rubén Seoane Souto, Maksim Borovkov, Peter Krogstrup, Yigal Meir, Martin Leijnse, Jeroen Danon, and Georgios Katsaros. “Subgap Transport in Superconductor-Semiconductor Hybrid Islands: Weak and Strong Coupling Regimes.” Physical Review Research. American Physical Society, 2025. https://doi.org/10.1103/PhysRevResearch.7.023022.' ieee: 'M. Valentini et al., “Subgap transport in superconductor-semiconductor hybrid islands: Weak and strong coupling regimes,” Physical Review Research, vol. 7, no. 2. American Physical Society, 2025.' ista: 'Valentini M, Souto RS, Borovkov M, Krogstrup P, Meir Y, Leijnse M, Danon J, Katsaros G. 2025. Subgap transport in superconductor-semiconductor hybrid islands: Weak and strong coupling regimes. Physical Review Research. 7(2), 023022.' mla: 'Valentini, Marco, et al. “Subgap Transport in Superconductor-Semiconductor Hybrid Islands: Weak and Strong Coupling Regimes.” Physical Review Research, vol. 7, no. 2, 023022, American Physical Society, 2025, doi:10.1103/PhysRevResearch.7.023022.' short: M. Valentini, R.S. Souto, M. Borovkov, P. Krogstrup, Y. Meir, M. Leijnse, J. Danon, G. Katsaros, Physical Review Research 7 (2025). corr_author: '1' date_created: 2025-04-20T22:01:28Z date_published: 2025-04-01T00:00:00Z date_updated: 2025-11-06T14:22:43Z day: '01' ddc: - '530' department: - _id: GeKa doi: 10.1103/PhysRevResearch.7.023022 file: - access_level: open_access checksum: 535351066e9c900340ef014893a09ac8 content_type: application/pdf creator: dernst date_created: 2025-04-22T09:00:08Z date_updated: 2025-04-22T09:00:08Z file_id: '19604' file_name: 2025_PhysReviewResearch_Valentini.pdf file_size: 1977581 relation: main_file success: 1 file_date_updated: 2025-04-22T09:00:08Z has_accepted_license: '1' intvolume: ' 7' issue: '2' language: - iso: eng month: '04' oa: 1 oa_version: Published Version project: - _id: 34a66131-11ca-11ed-8bc3-a31681c6b03e grant_number: F8606 name: 'Center for Correlated Quantum Materials and Solid State Quantum Systems: Conventional and unconventional topological superconductors' publication: Physical Review Research publication_identifier: issn: - 2643-1564 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: 'Subgap transport in superconductor-semiconductor hybrid islands: Weak and strong coupling regimes' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 7 year: '2025' ... --- APC_amount: 7068 EUR DOAJ_listed: '1' OA_place: publisher OA_type: gold _id: '19401' abstract: - lang: eng text: High kinetic inductance superconductors are gaining increasing interest for the realisation of qubits, amplifiers and detectors. Moreover, thanks to their high impedance, quantum buses made of such materials enable large zero-point fluctuations of the voltage, boosting the coupling rates to spin and charge qubits. However, fully exploiting the potential of disordered or granular superconductors is challenging, as their inductance and, therefore, impedance at high values are difficult to control. Here, we report a reproducible fabrication of granular aluminium resonators by developing a wireless ohmmeter, which allows in situ measurements during film deposition and, therefore, control of the kinetic inductance of granular aluminium films. Reproducible fabrication of circuits with impedances (inductances) exceeding 13 kΩ (1 nH per square) is now possible. By integrating a 7.9 kΩ resonator with a germanium double quantum dot, we demonstrate strong charge-photon coupling with a rate of gc/2π = 566 ± 2 MHz. This broadly applicable method opens the path for novel qubits and high-fidelity, long-distance two-qubit gates. acknowledged_ssus: - _id: M-Shop - _id: NanoFab acknowledgement: 'We acknowledge Franco De Palma, Mahya Khorramshahi, Fabian Oppliger, Thomas Reisinger, Pasquale Scarlino and Xiao Xue for helpful discussions. We thank Simon Robson for proofreading the manuscript. This research was supported by the Scientific Service Units of ISTA through resources provided by the MIBA Machine Shop and the Nanofabrication facility. This research and related results were made possible with the support of the NOMIS Foundation and the HORIZON-RIA 101069515 project. This research was funded in whole or in part by the Austrian Science Fund (FWF) https://doi.org/10.55776/P32235, https://doi.org/10.55776/I5060 and https://doi.org/10.55776/P36507. For Open Access purposes, the author has applied a CC BY public copyright license to any author accepted manuscript version arising from this submission. M.J. acknowledges funding from FellowQUTE 2024-01. K.R. acknowledges funding from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 101034413. I.M.P. acknowledges funding from the Deutsche Forschungsgemeinschaft (DFG - German Research Foundation) under project number 450396347 (GeHoldeQED). ICN2 acknowledges funding from Generalitat de Catalunya 2021SGR00457. We acknowledge support from CSIC Interdisciplinary Thematic Platform (PTI+) on Quantum Technologies (PTI-QTEP+). This research work has been funded by the European Commission - NextGenerationEU (Regulation EU 2020/2094), through CSIC’s Quantum Technologies Platform (QTEP). ICN2 is supported by the Severo Ochoa programme from Spanish MCIN/AEI (Grant No.: CEX2021-001214-S) and is funded by the CERCA Programme/Generalitat de Catalunya. Part of the present work has been performed in the framework of Universitat Autònoma de Barcelona Materials Science PhD programme. AGM has received funding from Grant RYC2021-033479-I funded by MCIN/AEI/10.13039/501100011033 and by European Union NextGenerationEU/PRTR. M.B. acknowledges support from SUR Generalitat de Catalunya and the EU Social Fund; project ref. 2020 FI 00103. The authors acknowledge the use of instrumentation and the technical advice provided by the Joint Electron Microscopy Centre at ALBA (JEMCA). ICN2 acknowledges funding from Grant IU16-014206 (METCAM-FIB) funded by the European Union through the European Regional Development Fund (ERDF), with the support of the Ministry of Research and Universities, Generalitat de Catalunya. ICN2 is a founding member of e-DREAM60.' article_number: '2103' article_processing_charge: Yes article_type: original arxiv: 1 author: - first_name: Marian full_name: Janik, Marian id: 396A1950-F248-11E8-B48F-1D18A9856A87 last_name: Janik orcid: 0009-0003-9037-8831 - first_name: Kevin Etienne Robert full_name: Roux, Kevin Etienne Robert id: 53f93ea2-803f-11ed-ab7e-b283135794ef last_name: Roux - first_name: Carla N full_name: Borja Espinosa, Carla N id: 18777c01-896a-11ed-bdf8-e4851dc07d16 last_name: Borja Espinosa - first_name: Oliver full_name: Sagi, Oliver id: 71616374-A8E9-11E9-A7CA-09ECE5697425 last_name: Sagi - first_name: Abdulhamid full_name: Baghdadi, Abdulhamid id: 160D87FA-96B5-11E9-BF77-7626E6697425 last_name: Baghdadi - first_name: Thomas full_name: Adletzberger, Thomas id: 38756BB2-F248-11E8-B48F-1D18A9856A87 last_name: Adletzberger - first_name: Stefano full_name: Calcaterra, Stefano last_name: Calcaterra - first_name: Marc full_name: Botifoll, Marc last_name: Botifoll - first_name: Alba full_name: Garzón Manjón, Alba last_name: Garzón Manjón - first_name: Jordi full_name: Arbiol, Jordi last_name: Arbiol - first_name: Daniel full_name: Chrastina, Daniel last_name: Chrastina - first_name: Giovanni full_name: Isella, Giovanni last_name: Isella - first_name: Ioan M. full_name: Pop, Ioan M. last_name: Pop - first_name: Georgios full_name: Katsaros, Georgios id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros orcid: 0000-0001-8342-202X citation: ama: Janik M, Roux KER, Borja Espinosa CN, et al. Strong charge-photon coupling in planar germanium enabled by granular aluminium superinductors. Nature Communications. 2025;16. doi:10.1038/s41467-025-57252-4 apa: Janik, M., Roux, K. E. R., Borja Espinosa, C. N., Sagi, O., Baghdadi, A., Adletzberger, T., … Katsaros, G. (2025). Strong charge-photon coupling in planar germanium enabled by granular aluminium superinductors. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-025-57252-4 chicago: Janik, Marian, Kevin Etienne Robert Roux, Carla N Borja Espinosa, Oliver Sagi, Abdulhamid Baghdadi, Thomas Adletzberger, Stefano Calcaterra, et al. “Strong Charge-Photon Coupling in Planar Germanium Enabled by Granular Aluminium Superinductors.” Nature Communications. Springer Nature, 2025. https://doi.org/10.1038/s41467-025-57252-4. ieee: M. Janik et al., “Strong charge-photon coupling in planar germanium enabled by granular aluminium superinductors,” Nature Communications, vol. 16. Springer Nature, 2025. ista: Janik M, Roux KER, Borja Espinosa CN, Sagi O, Baghdadi A, Adletzberger T, Calcaterra S, Botifoll M, Garzón Manjón A, Arbiol J, Chrastina D, Isella G, Pop IM, Katsaros G. 2025. Strong charge-photon coupling in planar germanium enabled by granular aluminium superinductors. Nature Communications. 16, 2103. mla: Janik, Marian, et al. “Strong Charge-Photon Coupling in Planar Germanium Enabled by Granular Aluminium Superinductors.” Nature Communications, vol. 16, 2103, Springer Nature, 2025, doi:10.1038/s41467-025-57252-4. short: M. Janik, K.E.R. Roux, C.N. Borja Espinosa, O. Sagi, A. Baghdadi, T. Adletzberger, S. Calcaterra, M. Botifoll, A. Garzón Manjón, J. Arbiol, D. Chrastina, G. Isella, I.M. Pop, G. Katsaros, Nature Communications 16 (2025). corr_author: '1' date_created: 2025-03-16T23:01:23Z date_published: 2025-03-01T00:00:00Z date_updated: 2026-05-20T06:34:51Z day: '01' ddc: - '530' department: - _id: GeKa - _id: JoFi - _id: M-Shop doi: 10.1038/s41467-025-57252-4 ec_funded: 1 external_id: arxiv: - '2407.03079' isi: - '001434774800001' pmid: - '40025007' file: - access_level: open_access checksum: a9383dd978ca2c50b7dded6c0bb2cd49 content_type: application/pdf creator: dernst date_created: 2025-03-17T10:53:32Z date_updated: 2025-03-17T10:53:32Z file_id: '19415' file_name: 2025_NatureComm_Janik.pdf file_size: 6364878 relation: main_file success: 1 file_date_updated: 2025-03-17T10:53:32Z has_accepted_license: '1' intvolume: ' 16' isi: 1 language: - iso: eng month: '03' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 34c0acea-11ca-11ed-8bc3-8775e10fd452 grant_number: '101069515' name: Integrated Germanium Quantum Technology - _id: 237B3DA4-32DE-11EA-91FC-C7463DDC885E call_identifier: FWF grant_number: P32235 name: Towards scalable hut wire quantum devices - _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1 grant_number: I05060 name: High impedance circuit quantum electrodynamics with hole spins - _id: bd8bd29e-d553-11ed-ba76-f0070d4b237a grant_number: P36507 name: Merging spin and superconducting qubits in planar Ge - _id: fc2ed2f7-9c52-11eb-aca3-c01059dda49c call_identifier: H2020 grant_number: '101034413' name: 'IST-BRIDGE: International postdoctoral program' - _id: 3AC91DDA-15DF-11EA-824D-93A3E7B544D1 call_identifier: FWF name: FWF Open Access Fund publication: Nature Communications publication_identifier: eissn: - 2041-1723 publication_status: published publisher: Springer Nature quality_controlled: '1' related_material: record: - id: '18144' relation: earlier_version status: public - id: '18886' relation: research_data status: public scopus_import: '1' status: public title: Strong charge-photon coupling in planar germanium enabled by granular aluminium superinductors tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 16 year: '2025' ... --- OA_place: repository OA_type: gold _id: '18886' abstract: - lang: eng text: Research Data for publication 'Strong charge-photon coupling in planar germanium enabled by granular aluminium superinductors' acknowledged_ssus: - _id: M-Shop - _id: NanoFab acknowledgement: 'We acknowledge Franco De Palma, Mahya Khorramshahi, Fabian Oppliger, Thomas Reisinger, Pasquale Scarlino and Xiao Xue for helpful discussions. We thank Simon Robson for proofreading the manuscript. This research was supported by the Scientific Service Units of ISTA through resources provided by the MIBA Machine Shop and the Nanofabrication facility. This research and related results were made possible with the support of the NOMIS Foundation and the HORIZON-RIA 101069515 project. This research was funded in whole or in part by the Austrian Science Fund (FWF) DOI:10.55776/P32235, DOI:10.55776/I5060 and DOI:10.55776/P36507. For Open Access purposes, the author has applied a CC BY public copyright license to any author accepted manuscript version arising from this submission. M.J. acknowledges funding from FellowQUTE 2024-01. I.M.P. acknowledges funding from the Deutsche Forschungsgemeinschaft (DFG – German Research Foundation) under project number 450396347 (GeHoldeQED). ICN2 acknowledges funding from Generalitat de Catalunya 2021SGR00457. We acknowledge support from CSIC Interdisciplinary Thematic Platform (PTI+) on Quantum Technologies (PTI-QTEP+). This research work has been funded by the European Commission – NextGenerationEU (Regulation EU 2020/2094), through CSIC''s Quantum Technologies Platform (QTEP). ICN2 is supported by the Severo Ochoa program from Spanish MCIN/AEI (Grant No.: CEX2021-001214-S) and is funded by the CERCA Programme/Generalitat de Catalunya. Part of the present work has been performed in the framework of Universitat Autònoma de Barcelona Materials Science PhD program. AGM has received funding from Grant RYC2021-033479-I funded by MCIN/AEI/10.13039/501100011033 and by European Union NextGenerationEU/PRTR. M.B. acknowledges support from SUR Generalitat de Catalunya and the EU Social Fund; project ref. 2020 FI 00103. The authors acknowledge the use of instrumentation and the technical advice provided by the Joint Electron Microscopy Center at ALBA (JEMCA). ICN2 acknowledges funding from Grant IU16-014206 (METCAM-FIB) funded by the European Union through the European Regional Development Fund (ERDF), with the support of the Ministry of Research and Universities, Generalitat de Catalunya. ICN2 is a founding member of e-DREAM.' article_processing_charge: No author: - first_name: Marian full_name: Janik, Marian id: 396A1950-F248-11E8-B48F-1D18A9856A87 last_name: Janik orcid: 0009-0003-9037-8831 citation: ama: Janik M. Research data for publication “Strong charge-photon coupling in planar germanium enabled by granular aluminium superinductors.” 2025. doi:10.15479/AT:ISTA:18886 apa: Janik, M. (2025). Research data for publication “Strong charge-photon coupling in planar germanium enabled by granular aluminium superinductors.” Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:18886 chicago: Janik, Marian. “Research Data for Publication ‘Strong Charge-Photon Coupling in Planar Germanium Enabled by Granular Aluminium Superinductors.’” Institute of Science and Technology Austria, 2025. https://doi.org/10.15479/AT:ISTA:18886. ieee: M. Janik, “Research data for publication ‘Strong charge-photon coupling in planar germanium enabled by granular aluminium superinductors.’” Institute of Science and Technology Austria, 2025. ista: Janik M. 2025. Research data for publication ‘Strong charge-photon coupling in planar germanium enabled by granular aluminium superinductors’, Institute of Science and Technology Austria, 10.15479/AT:ISTA:18886. mla: Janik, Marian. Research Data for Publication “Strong Charge-Photon Coupling in Planar Germanium Enabled by Granular Aluminium Superinductors.” Institute of Science and Technology Austria, 2025, doi:10.15479/AT:ISTA:18886. short: M. Janik, (2025). contributor: - contributor_type: researcher first_name: Kevin Etienne Robert id: 53f93ea2-803f-11ed-ab7e-b283135794ef last_name: Roux - contributor_type: researcher first_name: Carla N id: 18777c01-896a-11ed-bdf8-e4851dc07d16 last_name: Borja Espinosa - contributor_type: researcher first_name: Oliver id: 71616374-A8E9-11E9-A7CA-09ECE5697425 last_name: Sagi - contributor_type: researcher first_name: Abdulhamid id: 160D87FA-96B5-11E9-BF77-7626E6697425 last_name: Baghdadi - contributor_type: researcher first_name: Thomas id: 38756BB2-F248-11E8-B48F-1D18A9856A87 last_name: Adletzberger - contributor_type: researcher first_name: Stefano last_name: Calcaterra - contributor_type: researcher first_name: Marc last_name: Botifoll - contributor_type: researcher first_name: Alba Garzón last_name: Manjón - contributor_type: researcher first_name: Jordi last_name: Arbiol - contributor_type: researcher first_name: Daniel last_name: Chrastina - contributor_type: researcher first_name: Giovanni last_name: Isella - contributor_type: researcher first_name: Ioan M. last_name: Pop - contributor_type: researcher first_name: Georgios id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros orcid: 0000-0001-8342-202X corr_author: '1' date_created: 2025-01-27T09:48:44Z date_published: 2025-01-27T00:00:00Z date_updated: 2026-05-20T06:34:50Z day: '27' ddc: - '530' department: - _id: GeKa - _id: GradSch doi: 10.15479/AT:ISTA:18886 file: - access_level: open_access checksum: 977dffed4bec3c7d6315aa1cbd19e8a7 content_type: text/plain creator: arashid date_created: 2025-01-27T11:27:30Z date_updated: 2025-01-27T11:27:30Z file_id: '18893' file_name: readme.txt file_size: 1017 relation: main_file success: 1 - access_level: open_access checksum: 7ab5e3e65ddf59bbf3622ace8a0cda1c content_type: application/zip creator: arashid date_created: 2025-01-27T11:27:35Z date_updated: 2025-01-27T11:27:35Z file_id: '18894' file_name: research_data.zip file_size: 33815056 relation: main_file success: 1 file_date_updated: 2025-01-27T11:27:35Z has_accepted_license: '1' month: '01' oa: 1 oa_version: Published Version project: - _id: 34c0acea-11ca-11ed-8bc3-8775e10fd452 grant_number: '101069515' name: Integrated Germanium Quantum Technology - _id: 237B3DA4-32DE-11EA-91FC-C7463DDC885E call_identifier: FWF grant_number: P32235 name: Towards scalable hut wire quantum devices - _id: bd8bd29e-d553-11ed-ba76-f0070d4b237a grant_number: P36507 name: Merging spin and superconducting qubits in planar Ge - _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1 grant_number: I05060 name: High impedance circuit quantum electrodynamics with hole spins publisher: Institute of Science and Technology Austria related_material: record: - id: '18144' relation: used_in_publication status: public - id: '19401' relation: used_in_publication status: public status: public title: Research data for publication 'Strong charge-photon coupling in planar germanium enabled by granular aluminium superinductors' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: research_data user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2025' ... --- OA_place: publisher OA_type: gold _id: '19409' abstract: - lang: eng text: "This .zip file contains the data to reproduce the figures and supplementary figures of \"Exchange anisotropies in microwave-driven singlet-triplet qubits\" by Jaime Saez-Mollejo et al.\r\n" acknowledged_ssus: - _id: NanoFab - _id: M-Shop acknowledgement: "We thank A. Crippa for helpful discussions. This research was supported by the Scientific Service Units of ISTA through resources provided by the MIBA Machine Shop and the Nanofabrication facility. This research and related results were made possible with the support of the NOMIS Foundation, the HORIZON-RIA 101069515 project and the FWF Projects \r\nwith DOI:10.55776/F86 and DOI:10.55776/I5060. M.R.-R. acknowledges support from the Netherlands Organization of\r\n scientific Research (NWO) under Veni grant VI.Veni.212.223. The Research of S.B. and M.R.-R. was sponsored in part by the Army Research Office and was accomplished under Award Number: W911NF-23-1-0110." article_processing_charge: No author: - first_name: Jaime full_name: Saez Mollejo, Jaime id: e0390f72-f6e0-11ea-865d-862393336714 last_name: Saez Mollejo citation: ama: Saez Mollejo J. Exchange anisotropies in microwave-driven singlet-triplet qubits. 2025. doi:10.15479/AT:ISTA:19409 apa: Saez Mollejo, J. (2025). Exchange anisotropies in microwave-driven singlet-triplet qubits. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:19409 chicago: Saez Mollejo, Jaime. “Exchange Anisotropies in Microwave-Driven Singlet-Triplet Qubits.” Institute of Science and Technology Austria, 2025. https://doi.org/10.15479/AT:ISTA:19409. ieee: J. Saez Mollejo, “Exchange anisotropies in microwave-driven singlet-triplet qubits.” Institute of Science and Technology Austria, 2025. ista: Saez Mollejo J. 2025. Exchange anisotropies in microwave-driven singlet-triplet qubits, Institute of Science and Technology Austria, 10.15479/AT:ISTA:19409. mla: Saez Mollejo, Jaime. Exchange Anisotropies in Microwave-Driven Singlet-Triplet Qubits. Institute of Science and Technology Austria, 2025, doi:10.15479/AT:ISTA:19409. short: J. Saez Mollejo, (2025). contributor: - first_name: Daniel id: 4C473F58-F248-11E8-B48F-1D18A9856A87 last_name: Jirovec orcid: 0000-0002-7197-4801 - first_name: Yona A id: fe39122d-06bb-11ec-a33b-9e22b40e40a5 last_name: Schell - first_name: Josip id: 3F5D8856-F248-11E8-B48F-1D18A9856A87 last_name: Kukucka - first_name: Stefano last_name: Calcaterra - first_name: 'Daniel ' last_name: Chrastina - first_name: 'Giovanni ' last_name: Isella - first_name: Maximilian last_name: Rimbach-Russ - first_name: Stefano last_name: Bosco - first_name: Georgios id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros orcid: 0000-0001-8342-202X corr_author: '1' date_created: 2025-03-17T08:57:09Z date_published: 2025-03-17T00:00:00Z date_updated: 2026-05-20T06:42:16Z day: '17' ddc: - '530' department: - _id: GradSch - _id: GeKa doi: 10.15479/AT:ISTA:19409 file: - access_level: open_access checksum: 1f21c8ea2196776aae51cc3a5d00e00b content_type: application/x-zip-compressed creator: jsaezmol date_created: 2025-03-17T08:48:09Z date_updated: 2025-03-17T08:48:09Z file_id: '19410' file_name: AllDataPublished.zip file_size: 21971911 relation: main_file success: 1 file_date_updated: 2025-03-17T08:48:09Z has_accepted_license: '1' month: '03' oa: 1 oa_version: Published Version project: - _id: 34c0acea-11ca-11ed-8bc3-8775e10fd452 grant_number: '101069515' name: Integrated Germanium Quantum Technology - _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1 grant_number: I05060 name: High impedance circuit quantum electrodynamics with hole spins - _id: 34a66131-11ca-11ed-8bc3-a31681c6b03e grant_number: F8606 name: 'Center for Correlated Quantum Materials and Solid State Quantum Systems: Conventional and unconventional topological superconductors' publisher: Institute of Science and Technology Austria related_material: record: - id: '19424' relation: used_in_publication status: public status: public title: Exchange anisotropies in microwave-driven singlet-triplet qubits tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: research_data user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2025' ... --- APC_amount: 1260 EUR DOAJ_listed: '1' OA_place: publisher OA_type: gold PlanS_conform: '1' _id: '20664' abstract: - lang: eng text: Conference travel contributes to the climate footprint of academic research. Here, we provide a quantitative estimate of the carbon emissions associated with conference attendance by analyzing travel data from participants of 10 international conferences in the field of magnetic resonance, namely EUROMAR, ENC and ICMRBS. We find that attending a EUROMAR conference produces, on average, more than 1 t CO2 eq.. For the analyzed conferences outside Europe, the corresponding value is about 2–3 times higher, on average, with intercontinental trips amounting to up to 5 t. We compare these conference-related emissions to other activities associated with research and show that conference travel is a substantial portion of the total climate footprint of a researcher in magnetic resonance. We explore several strategies to reduce these emissions, including the impact of selecting conference venues more strategically and the possibility of decentralized conferences. Through a detailed comparison of train versus air travel – accounting for both direct and infrastructure-related emissions – we demonstrate that train travel offers considerable carbon savings. These data may provide a basis for strategic choices of future conferences in the field and for individuals deciding on their conference attendance. acknowledgement: 'First and foremost, we are grateful to the conference organizers who have provided data, either in the form of tables or by pointing us to abstract books. We thank the reviewers and the handling editor (Gottfried Otting) for the careful reading and suggestions. This project emerged from an interactive course about energy and climate, held at IST Austria by Jeroen Dobbelaere, Georgios Katsaros and Paul Schanda. We are grateful to ISTA''s Graduate School for enabling this interdisciplinary course and to all participating students. We thank the following persons for discussions and/or comments about the manuscript: Helene Van Melckebeke, Mei Hong, Jeff Hoch, Gottfried Otting and Matthias Ernst. For the preparation of the manuscript, AI tools have been used, namely for finding relevant literature (ChatGPT) and for correcting the text (Writefull, within Overleaf LaTeX).' article_processing_charge: Yes article_type: original author: - first_name: Lucky full_name: Kapoor, Lucky id: 84b9700b-15b2-11ec-abd3-831089e67615 last_name: Kapoor orcid: 0000-0001-8319-2148 - first_name: Natalia full_name: Ruzickova, Natalia id: D2761128-D73D-11E9-A1BF-BA0DE6697425 last_name: Ruzickova - first_name: Predrag full_name: Zivadinovic, Predrag id: 68AA0E5A-AFDA-11E9-9994-141DE6697425 last_name: Zivadinovic - first_name: Valentin full_name: Leitner, Valentin id: 4c665ce3-0016-11ec-bea0-e44de7a4fa3d last_name: Leitner - first_name: Maria A full_name: Sisak, Maria A id: 44A03D04-AEA4-11E9-B225-EA2DE6697425 last_name: Sisak - first_name: Cecelia N full_name: Mweka, Cecelia N id: 2a69ab4b-896a-11ed-bdf8-cb8641cf2b21 last_name: Mweka - first_name: Jeroen A full_name: Dobbelaere, Jeroen A id: c15a5412-de82-11ed-b809-8dc1aa996e40 last_name: Dobbelaere - first_name: Georgios full_name: Katsaros, Georgios id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros orcid: 0000-0001-8342-202X - first_name: Paul full_name: Schanda, Paul id: 7B541462-FAF6-11E9-A490-E8DFE5697425 last_name: Schanda orcid: 0000-0002-9350-7606 citation: ama: 'Kapoor L, Ruzickova N, Zivadinovic P, et al. Quantifying the carbon footprint of conference travel: The case of NMR meetings. Magnetic Resonance. 2025;6(2):243-256. doi:10.5194/mr-6-243-2025' apa: 'Kapoor, L., Ruzickova, N., Zivadinovic, P., Leitner, V., Sisak, M. A., Mweka, C. N., … Schanda, P. (2025). Quantifying the carbon footprint of conference travel: The case of NMR meetings. Magnetic Resonance. Copernicus Publications. https://doi.org/10.5194/mr-6-243-2025' chicago: 'Kapoor, Lucky, Natalia Ruzickova, Predrag Zivadinovic, Valentin Leitner, Maria A Sisak, Cecelia N Mweka, Jeroen A Dobbelaere, Georgios Katsaros, and Paul Schanda. “Quantifying the Carbon Footprint of Conference Travel: The Case of NMR Meetings.” Magnetic Resonance. Copernicus Publications, 2025. https://doi.org/10.5194/mr-6-243-2025.' ieee: 'L. Kapoor et al., “Quantifying the carbon footprint of conference travel: The case of NMR meetings,” Magnetic Resonance, vol. 6, no. 2. Copernicus Publications, pp. 243–256, 2025.' ista: 'Kapoor L, Ruzickova N, Zivadinovic P, Leitner V, Sisak MA, Mweka CN, Dobbelaere JA, Katsaros G, Schanda P. 2025. Quantifying the carbon footprint of conference travel: The case of NMR meetings. Magnetic Resonance. 6(2), 243–256.' mla: 'Kapoor, Lucky, et al. “Quantifying the Carbon Footprint of Conference Travel: The Case of NMR Meetings.” Magnetic Resonance, vol. 6, no. 2, Copernicus Publications, 2025, pp. 243–56, doi:10.5194/mr-6-243-2025.' short: L. Kapoor, N. Ruzickova, P. Zivadinovic, V. Leitner, M.A. Sisak, C.N. Mweka, J.A. Dobbelaere, G. Katsaros, P. Schanda, Magnetic Resonance 6 (2025) 243–256. corr_author: '1' date_created: 2025-11-23T23:01:39Z date_published: 2025-11-10T00:00:00Z date_updated: 2026-05-20T08:01:13Z day: '10' ddc: - '000' department: - _id: JoFi - _id: GaTk - _id: JoCs - _id: EvBe - _id: TaHa - _id: GradSch - _id: GeKa - _id: PaSc doi: 10.5194/mr-6-243-2025 file: - access_level: open_access checksum: c63dd47b0e77f9451821436bb77d27c9 content_type: application/pdf creator: dernst date_created: 2025-11-24T08:25:19Z date_updated: 2025-11-24T08:25:19Z file_id: '20672' file_name: 2025_MagneticResonance_Kapoor.pdf file_size: 3081399 relation: main_file success: 1 file_date_updated: 2025-11-24T08:25:19Z has_accepted_license: '1' intvolume: ' 6' issue: '2' language: - iso: eng month: '11' oa: 1 oa_version: Published Version page: 243-256 project: - _id: B67AFEDC-15C9-11EA-A837-991A96BB2854 name: IST Austria Open Access Fund publication: Magnetic Resonance publication_identifier: eissn: - 2699-0016 publication_status: published publisher: Copernicus Publications quality_controlled: '1' related_material: link: - description: News on ISTA website relation: research_data url: https://ista.ac.at/en/news/carbon-footprint-of-conference-travel/ record: - id: '20242' relation: research_data status: public scopus_import: '1' status: public title: 'Quantifying the carbon footprint of conference travel: The case of NMR meetings' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 6 year: '2025' ... --- APC_amount: 7068 EUR DOAJ_listed: '1' OA_place: publisher OA_type: gold _id: '19424' abstract: - lang: eng text: "Hole spin qubits are rapidly emerging as the workhorse of semiconducting quantum processors because of their large spin-orbit interaction, enabling fast all-electric operations at low power. However, spin-orbit interaction also causes non-uniformities in devices, resulting in locally varying qubit energies and site-dependent anisotropies. While these anisotropies can be used to drive single-spins, if not properly harnessed, they can hinder the path toward large-scale quantum processors. Here, we report on microwave-driven singlet-triplet qubits in planar germanium and use them to investigate the anisotropy of two spins in a double quantum dot. We show two distinct operating regimes depending on the magnetic field direction. For in-plane fields, the two spins are largely anisotropic, and electrically tunable, which enables to measure all the available transitions; coherence times exceeding 3 $\\mu$s are extracted. For out-of-plane fields, they have an isotropic response but preserve the substantial energy difference required to address the singlet-triplet qubit. Even in this field direction, where the qubit lifetime\r\nis strongly affected by nuclear spins, we find 400 ns coherence times. Our work adds a valuable tool to investigate and harness the anisotropy of spin qubits and can be implemented in any large-scale NxN device, facilitating the path towards scalable quantum processors." acknowledged_ssus: - _id: M-Shop - _id: NanoFab acknowledgement: "We thank A. Crippa for helpful discussions. This research was supported by the Scientific Service Units of ISTA through resources provided by the MIBA Machine Shop and the Nanofabrication facility. This research and related results were made possible with the support of the NOMIS Foundation, the HORIZON-RIA 101069515 project and the FWF Projects with DOI:10.55776/F86 and DOI:10.55776/I5060. M.R.-R. acknowledges support from the Netherlands Organization of Scientific Research (NWO) under Veni grant VI.Veni.212.223. The\r\nResearch of S.B. and M.R.-R. was sponsored in part by the Army Research Office and was accomplished under Award Number: W911NF-23-1-0110. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the Army Research Office or the U.S. Government. The U.S. Government is authorized to reproduce and distribute reprints for Government purposes notwithstanding any copyright notation herein." article_number: '3862' article_processing_charge: Yes article_type: original arxiv: 1 author: - first_name: Jaime full_name: Saez Mollejo, Jaime id: e0390f72-f6e0-11ea-865d-862393336714 last_name: Saez Mollejo - first_name: Daniel full_name: Jirovec, Daniel id: 4C473F58-F248-11E8-B48F-1D18A9856A87 last_name: Jirovec orcid: 0000-0002-7197-4801 - first_name: Yona A full_name: Schell, Yona A id: fe39122d-06bb-11ec-a33b-9e22b40e40a5 last_name: Schell - first_name: Josip full_name: Kukucka, Josip id: 3F5D8856-F248-11E8-B48F-1D18A9856A87 last_name: Kukucka - first_name: Stefano full_name: Calcaterra, Stefano last_name: Calcaterra - first_name: Daniel full_name: Chrastina, Daniel last_name: Chrastina - first_name: Giovanni full_name: Isella, Giovanni last_name: Isella - first_name: Maximilian full_name: Rimbach-Russ, Maximilian last_name: Rimbach-Russ - first_name: Stefano full_name: Bosco, Stefano last_name: Bosco - first_name: Georgios full_name: Katsaros, Georgios id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros orcid: 0000-0001-8342-202X citation: ama: Saez Mollejo J, Jirovec D, Schell YA, et al. Exchange anisotropies in microwave-driven singlet-triplet qubits. Nature Communications. 2025;16. doi:10.1038/s41467-025-58969-y apa: Saez Mollejo, J., Jirovec, D., Schell, Y. A., Kukucka, J., Calcaterra, S., Chrastina, D., … Katsaros, G. (2025). Exchange anisotropies in microwave-driven singlet-triplet qubits. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-025-58969-y chicago: Saez Mollejo, Jaime, Daniel Jirovec, Yona A Schell, Josip Kukucka, Stefano Calcaterra, Daniel Chrastina, Giovanni Isella, Maximilian Rimbach-Russ, Stefano Bosco, and Georgios Katsaros. “Exchange Anisotropies in Microwave-Driven Singlet-Triplet Qubits.” Nature Communications. Springer Nature, 2025. https://doi.org/10.1038/s41467-025-58969-y. ieee: J. Saez Mollejo et al., “Exchange anisotropies in microwave-driven singlet-triplet qubits,” Nature Communications, vol. 16. Springer Nature, 2025. ista: Saez Mollejo J, Jirovec D, Schell YA, Kukucka J, Calcaterra S, Chrastina D, Isella G, Rimbach-Russ M, Bosco S, Katsaros G. 2025. Exchange anisotropies in microwave-driven singlet-triplet qubits. Nature Communications. 16, 3862. mla: Saez Mollejo, Jaime, et al. “Exchange Anisotropies in Microwave-Driven Singlet-Triplet Qubits.” Nature Communications, vol. 16, 3862, Springer Nature, 2025, doi:10.1038/s41467-025-58969-y. short: J. Saez Mollejo, D. Jirovec, Y.A. Schell, J. Kukucka, S. Calcaterra, D. Chrastina, G. Isella, M. Rimbach-Russ, S. Bosco, G. Katsaros, Nature Communications 16 (2025). corr_author: '1' date_created: 2025-03-19T13:28:12Z date_published: 2025-04-24T00:00:00Z date_updated: 2026-05-20T22:31:25Z day: '24' ddc: - '530' department: - _id: GeKa doi: 10.1038/s41467-025-58969-y external_id: arxiv: - '2408.03224' isi: - '001475587400022' pmid: - '40274808' file: - access_level: open_access checksum: 13fe84cddc9d4e47213bf17acdac70d7 content_type: application/pdf creator: dernst date_created: 2025-05-05T07:08:23Z date_updated: 2025-05-05T07:08:23Z file_id: '19645' file_name: 2025_NatureComm_SaezMollejo.pdf file_size: 1548756 relation: main_file success: 1 file_date_updated: 2025-05-05T07:08:23Z has_accepted_license: '1' intvolume: ' 16' isi: 1 language: - iso: eng month: '04' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 34c0acea-11ca-11ed-8bc3-8775e10fd452 grant_number: '101069515' name: Integrated Germanium Quantum Technology - _id: 34a66131-11ca-11ed-8bc3-a31681c6b03e grant_number: F8606 name: 'Center for Correlated Quantum Materials and Solid State Quantum Systems: Conventional and unconventional topological superconductors' - _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1 grant_number: I05060 name: High impedance circuit quantum electrodynamics with hole spins - _id: 262116AA-B435-11E9-9278-68D0E5697425 name: Hybrid Semiconductor - Superconductor Quantum Devices - _id: 3AC91DDA-15DF-11EA-824D-93A3E7B544D1 call_identifier: FWF name: FWF Open Access Fund publication: Nature Communications publication_identifier: eissn: - 2041-1723 publication_status: published publisher: Springer Nature quality_controlled: '1' related_material: link: - description: News on ISTA website relation: research_data url: https://ista.ac.at/en/news/the-shadow-of-an-electron/ record: - id: '19409' relation: research_data status: public - id: '19836' relation: dissertation_contains status: public scopus_import: '1' status: public title: Exchange anisotropies in microwave-driven singlet-triplet qubits tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 16 year: '2025' ... --- OA_place: publisher _id: '19836' abstract: - lang: eng text: "Over the past century, researchers have been fascinated by the quantum nature of the\r\nphysical world, initially striving to understand its fundamental principles and consequences, and\r\neventually progressing toward engineering systems that can control and manipulate quantum\r\nproperties. Today, we stand at the dawn of the quantum technology era. While some quantum\r\ntechnologies follow well-defined roadmaps, others are still in the exciting and uncertain early\r\nstages of development. In the fields of quantum computing and quantum simulation, research\r\nis being conducted across a wide variety of platforms. Each of these demonstrates control over\r\nquantum properties but also faces challenges in scaling up to the level of a mature technology.\r\nThis thesis explores some of the fundamental properties of hole spin qubits in planar germanium.\r\nSemiconductor spin qubits are considered strong candidates for the realization of quantum\r\nprocessors, owing to their long relaxation and coherence times, as well as their compatibility\r\nwith existing semiconductor industry infrastructure. Among these, hole spin qubits in planar\r\ngermanium are particularly promising. Their advantages include a large effective mass, which\r\neases fabrication constraints; inherent protection from hyperfine noise; and strong spin-orbit\r\ninteraction, which enables fast and purely electrical control. However, spin-orbit coupling also\r\nintroduces site-dependent variability across qubits, particularly in the g-tensors and spin-flip\r\ntunneling, which might cause that the quantization axes are not aligned. In this thesis, we\r\ninvestigate the tilt between the quantization axes of two hole spins hosted in a double quantum\r\ndot as a function of both the magnetic field direction and various electrostatic configurations,\r\ndemonstrating that both parameters influence this tilt. We conclude by introducing a machine-learning-assisted routine to automatically tune baseband spin qubits. This approach may prove\r\nto be a powerful tool for characterizing spin-orbit effects and gaining deeper insight into the\r\nphysics governing spin qubit behavior.\r\n" acknowledged_ssus: - _id: NanoFab - _id: M-Shop acknowledgement: "This research was supported by the Scientific Service Units of ISTA through resources provided\r\nby the MIBA Machine Shop and the Nanofabrication facility. We acknowledge the support from\r\nthe European Commission with the project Integrated Germanium Quantum Technology (with\r\nDOI:10.3030/101069515), the NOMIS Foundation, the HORIZON-RIA 101069515 project and\r\nthe FWF Projects Center for Correlated Quantum Materials and Solid State Quantum Systems:\r\nConventional and unconventional topological superconductors (with DOI:10.55776/F86) and\r\nHigh impedance circuit quantum electrodynamics with hole spins (with DOI:10.55776/I5060).\r\n" alternative_title: - ISTA Thesis article_processing_charge: No author: - first_name: Jaime full_name: Saez Mollejo, Jaime id: e0390f72-f6e0-11ea-865d-862393336714 last_name: Saez Mollejo citation: ama: 'Saez Mollejo J. Singlet-triplet qubits in planar Germanium : From exchange anisotropies to autonomous tuning . 2025. doi:10.15479/AT-ISTA-19836' apa: 'Saez Mollejo, J. (2025). Singlet-triplet qubits in planar Germanium : From exchange anisotropies to autonomous tuning . Institute of Science and Technology Austria. https://doi.org/10.15479/AT-ISTA-19836' chicago: 'Saez Mollejo, Jaime. “Singlet-Triplet Qubits in Planar Germanium : From Exchange Anisotropies to Autonomous Tuning .” Institute of Science and Technology Austria, 2025. https://doi.org/10.15479/AT-ISTA-19836.' ieee: 'J. Saez Mollejo, “Singlet-triplet qubits in planar Germanium : From exchange anisotropies to autonomous tuning ,” Institute of Science and Technology Austria, 2025.' ista: 'Saez Mollejo J. 2025. Singlet-triplet qubits in planar Germanium : From exchange anisotropies to autonomous tuning . Institute of Science and Technology Austria.' mla: 'Saez Mollejo, Jaime. Singlet-Triplet Qubits in Planar Germanium : From Exchange Anisotropies to Autonomous Tuning . Institute of Science and Technology Austria, 2025, doi:10.15479/AT-ISTA-19836.' short: 'J. Saez Mollejo, Singlet-Triplet Qubits in Planar Germanium : From Exchange Anisotropies to Autonomous Tuning , Institute of Science and Technology Austria, 2025.' corr_author: '1' date_created: 2025-06-13T09:01:50Z date_published: 2025-06-13T00:00:00Z date_updated: 2026-05-20T06:42:16Z day: '13' ddc: - '530' - '539' degree_awarded: PhD department: - _id: GradSch - _id: GeKa doi: 10.15479/AT-ISTA-19836 file: - access_level: closed checksum: 643bfddead59857536cce4d57c775b32 content_type: application/x-zip-compressed creator: jsaezmol date_created: 2025-06-16T09:38:49Z date_updated: 2026-04-01T22:30:07Z embargo_to: open_access file_id: '19849' file_name: istaustriathesis-master - Copy.zip file_size: 59892829 relation: source_file - access_level: open_access checksum: e3dcb767fcc2b1787a455fdda991cefb content_type: application/pdf creator: jsaezmol date_created: 2025-06-18T08:50:16Z date_updated: 2026-04-01T22:30:07Z embargo: 2026-04-01 file_id: '19851' file_name: SaezMollejo_PhDFinal_pdfa-1b.pdf file_size: 22382376 relation: main_file file_date_updated: 2026-04-01T22:30:07Z has_accepted_license: '1' language: - iso: eng month: '06' oa: 1 oa_version: Published Version page: '175' project: - _id: 34c0acea-11ca-11ed-8bc3-8775e10fd452 grant_number: '101069515' name: Integrated Germanium Quantum Technology - _id: 34a66131-11ca-11ed-8bc3-a31681c6b03e grant_number: F8606 name: 'Center for Correlated Quantum Materials and Solid State Quantum Systems: Conventional and unconventional topological superconductors' - _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1 grant_number: I05060 name: High impedance circuit quantum electrodynamics with hole spins publication_identifier: issn: - 2663-337X publication_status: published publisher: Institute of Science and Technology Austria related_material: record: - id: '19424' relation: part_of_dissertation status: public status: public supervisor: - first_name: Georgios full_name: Katsaros, Georgios id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros orcid: 0000-0001-8342-202X title: 'Singlet-triplet qubits in planar Germanium : From exchange anisotropies to autonomous tuning ' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: dissertation user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 year: '2025' ... --- DOAJ_listed: '1' OA_place: publisher OA_type: gold _id: '18602' abstract: - lang: eng text: Semiconductor quantum dots (QDs) in planar germanium (Ge) heterostructures have emerged as front-runners for future hole-based quantum processors. Here, we present strong coupling between a hole charge qubit, defined in a double quantum dot (DQD) in planar Ge, and microwave photons in a high-impedance (Zr = 1.3 kΩ) resonator based on an array of superconducting quantum interference devices (SQUIDs). Our investigation reveals vacuum-Rabi splittings with coupling strengths up to g0/2π = 260 MHz, and a cooperativity of C ~ 100, dependent on DQD tuning. Furthermore, utilizing the frequency tunability of our resonator, we explore the quenched energy splitting associated with strong Coulomb correlation effects in Ge QDs. The observed enhanced coherence of the strongly correlated excited state signals the presence of distinct symmetries within related spin functions, serving as a precursor to the strong coupling between photons and spin-charge hybrid qubits in planar Ge. This work paves the way towards coherent quantum connections between remote hole qubits in planar Ge, required to scale up hole-based quantum processors. acknowledgement: The authors thank Simone Frasca, Vincent Jouanny, Guillaume Beaulieu, Camille Roy, Dominic Dahinden, Davide Lombardo, Daniel Chrastina, and Siddhart Gautam for contributing to some cleanroom fabrication steps, the measurement setup, device simulations, data analysis, and for the useful discussions. P.S. acknowledges support from the Swiss National Science Foundation (SNSF) through the grants Ref. No. 200021 200418 and Ref. No. 206021_205335, and from the Swiss State Secretariat for Education, Research and Innovation (SERI) under contract number 01042765 SEFRI MB22.00081. W.J. acknowledges support from the EPFL QSE Postdoctoral Fellowship Grant. S.B., D.L., and P.S. acknowledge support from the NCCR Spin Qubit in Silicon (NCCR-SPIN) Grant No. 51NF40-180604. M.J., G.K., G.I., and S.C. acknowledge support from the Horizon Europe Project IGNITE ID 101070193. G.K. acknowledges support from the FWF via the P32235 and I05060 projects. article_number: '10177' article_processing_charge: Yes article_type: original author: - first_name: Franco full_name: De Palma, Franco last_name: De Palma - first_name: Fabian full_name: Oppliger, Fabian last_name: Oppliger - first_name: Wonjin full_name: Jang, Wonjin last_name: Jang - first_name: Stefano full_name: Bosco, Stefano last_name: Bosco - first_name: Marian full_name: Janik, Marian id: 396A1950-F248-11E8-B48F-1D18A9856A87 last_name: Janik orcid: 0009-0003-9037-8831 - first_name: Stefano full_name: Calcaterra, Stefano last_name: Calcaterra - first_name: Georgios full_name: Katsaros, Georgios id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros orcid: 0000-0001-8342-202X - first_name: Giovanni full_name: Isella, Giovanni last_name: Isella - first_name: Daniel full_name: Loss, Daniel last_name: Loss - first_name: Pasquale full_name: Scarlino, Pasquale last_name: Scarlino citation: ama: De Palma F, Oppliger F, Jang W, et al. Strong hole-photon coupling in planar Ge for probing charge degree and strongly correlated states. Nature Communications. 2024;15. doi:10.1038/s41467-024-54520-7 apa: De Palma, F., Oppliger, F., Jang, W., Bosco, S., Janik, M., Calcaterra, S., … Scarlino, P. (2024). Strong hole-photon coupling in planar Ge for probing charge degree and strongly correlated states. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-024-54520-7 chicago: De Palma, Franco, Fabian Oppliger, Wonjin Jang, Stefano Bosco, Marian Janik, Stefano Calcaterra, Georgios Katsaros, Giovanni Isella, Daniel Loss, and Pasquale Scarlino. “Strong Hole-Photon Coupling in Planar Ge for Probing Charge Degree and Strongly Correlated States.” Nature Communications. Springer Nature, 2024. https://doi.org/10.1038/s41467-024-54520-7. ieee: F. De Palma et al., “Strong hole-photon coupling in planar Ge for probing charge degree and strongly correlated states,” Nature Communications, vol. 15. Springer Nature, 2024. ista: De Palma F, Oppliger F, Jang W, Bosco S, Janik M, Calcaterra S, Katsaros G, Isella G, Loss D, Scarlino P. 2024. Strong hole-photon coupling in planar Ge for probing charge degree and strongly correlated states. Nature Communications. 15, 10177. mla: De Palma, Franco, et al. “Strong Hole-Photon Coupling in Planar Ge for Probing Charge Degree and Strongly Correlated States.” Nature Communications, vol. 15, 10177, Springer Nature, 2024, doi:10.1038/s41467-024-54520-7. short: F. De Palma, F. Oppliger, W. Jang, S. Bosco, M. Janik, S. Calcaterra, G. Katsaros, G. Isella, D. Loss, P. Scarlino, Nature Communications 15 (2024). date_created: 2024-12-01T23:01:53Z date_published: 2024-12-01T00:00:00Z date_updated: 2025-09-08T14:46:06Z day: '01' ddc: - '530' department: - _id: GeKa doi: 10.1038/s41467-024-54520-7 external_id: isi: - '001362684200001' pmid: - '39580488' file: - access_level: open_access checksum: ef9f99a84089c388904cc8aa8d89c55a content_type: application/pdf creator: dernst date_created: 2024-12-03T11:00:15Z date_updated: 2024-12-03T11:00:15Z file_id: '18611' file_name: 2024_NatureComm_dePalma.pdf file_size: 5288092 relation: main_file success: 1 file_date_updated: 2024-12-03T11:00:15Z has_accepted_license: '1' intvolume: ' 15' isi: 1 language: - iso: eng month: '12' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 237B3DA4-32DE-11EA-91FC-C7463DDC885E call_identifier: FWF grant_number: P32235 name: Towards scalable hut wire quantum devices - _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1 grant_number: I05060 name: High impedance circuit quantum electrodynamics with hole spins publication: Nature Communications publication_identifier: eissn: - 2041-1723 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Strong hole-photon coupling in planar Ge for probing charge degree and strongly correlated states tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 15 year: '2024' ... --- OA_place: publisher OA_type: hybrid _id: '18653' abstract: - lang: eng text: Charge sensing is a sensitive technique for probing quantum devices, of particular importance for spin-qubit readout. To achieve good readout sensitivities, the proximity of the charge sensor to the device to be measured is a necessity. However, this proximity also means that the operation of the device affects, in turn, the sensor tuning and ultimately the readout sensitivity. We present an approach for compensating for this crosstalk effect allowing for the gate voltages of the measured device to be swept in a 1-V × 1-V window while maintaining a sensor configuration chosen by a Bayesian optimizer. Our algorithm will hopefully be a major contribution to the suite of fully automated solutions required for the operation of large quantum device architectures. acknowledged_ssus: - _id: NanoFab acknowledgement: We thank Nicholas Sim for providing help with the experiment and Sebastian Orbell for helpful discussions. This work was supported by the Royal Society, the Engineering and Physical Sciences Research Council (EPSRC) National Quantum Technology Hub in Networked Quantum Information Technology (Grant No. EP/M013243/1), Quantum Technology Capital (Grant No. EP/N014995/1), the EPSRC Platform Grant (Grant No. EP/R029229/1), the European Research Council (Grant Agreement No. 948932), the Scientific Service Units of the Institute of Science and Technology Austria through resources provided by the nanofabrication facility and, the FWF-I 05060 and HORIZON-RIA 101069515 projects. article_number: '064026' article_processing_charge: No article_type: original author: - first_name: Joseph full_name: Hickie, Joseph last_name: Hickie - first_name: Barnaby full_name: Van Straaten, Barnaby last_name: Van Straaten - first_name: Federico full_name: Fedele, Federico last_name: Fedele - first_name: Daniel full_name: Jirovec, Daniel id: 4C473F58-F248-11E8-B48F-1D18A9856A87 last_name: Jirovec orcid: 0000-0002-7197-4801 - first_name: Andrea full_name: Ballabio, Andrea last_name: Ballabio - first_name: Daniel full_name: Chrastina, Daniel last_name: Chrastina - first_name: Giovanni full_name: Isella, Giovanni last_name: Isella - first_name: Georgios full_name: Katsaros, Georgios id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros orcid: 0000-0001-8342-202X - first_name: Natalia full_name: Ares, Natalia last_name: Ares citation: ama: Hickie J, Van Straaten B, Fedele F, et al. Automated long-range compensation of an rf quantum dot sensor. Physical Review Applied. 2024;22(6). doi:10.1103/PhysRevApplied.22.064026 apa: Hickie, J., Van Straaten, B., Fedele, F., Jirovec, D., Ballabio, A., Chrastina, D., … Ares, N. (2024). Automated long-range compensation of an rf quantum dot sensor. Physical Review Applied. American Physical Society. https://doi.org/10.1103/PhysRevApplied.22.064026 chicago: Hickie, Joseph, Barnaby Van Straaten, Federico Fedele, Daniel Jirovec, Andrea Ballabio, Daniel Chrastina, Giovanni Isella, Georgios Katsaros, and Natalia Ares. “Automated Long-Range Compensation of an Rf Quantum Dot Sensor.” Physical Review Applied. American Physical Society, 2024. https://doi.org/10.1103/PhysRevApplied.22.064026. ieee: J. Hickie et al., “Automated long-range compensation of an rf quantum dot sensor,” Physical Review Applied, vol. 22, no. 6. American Physical Society, 2024. ista: Hickie J, Van Straaten B, Fedele F, Jirovec D, Ballabio A, Chrastina D, Isella G, Katsaros G, Ares N. 2024. Automated long-range compensation of an rf quantum dot sensor. Physical Review Applied. 22(6), 064026. mla: Hickie, Joseph, et al. “Automated Long-Range Compensation of an Rf Quantum Dot Sensor.” Physical Review Applied, vol. 22, no. 6, 064026, American Physical Society, 2024, doi:10.1103/PhysRevApplied.22.064026. short: J. Hickie, B. Van Straaten, F. Fedele, D. Jirovec, A. Ballabio, D. Chrastina, G. Isella, G. Katsaros, N. Ares, Physical Review Applied 22 (2024). date_created: 2024-12-15T23:01:50Z date_published: 2024-12-01T00:00:00Z date_updated: 2025-09-09T11:47:52Z day: '01' ddc: - '530' department: - _id: GeKa doi: 10.1103/PhysRevApplied.22.064026 external_id: isi: - '001379155900003' file: - access_level: open_access checksum: bc29a40819abc4969867b6cd6563f7ad content_type: application/pdf creator: dernst date_created: 2024-12-16T11:13:48Z date_updated: 2024-12-16T11:13:48Z file_id: '18662' file_name: 2024_PhysicalReviewApplied_Hickie.pdf file_size: 3560132 relation: main_file success: 1 file_date_updated: 2024-12-16T11:13:48Z has_accepted_license: '1' intvolume: ' 22' isi: 1 issue: '6' language: - iso: eng month: '12' oa: 1 oa_version: Published Version project: - _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1 grant_number: I05060 name: High impedance circuit quantum electrodynamics with hole spins - _id: 34c0acea-11ca-11ed-8bc3-8775e10fd452 grant_number: '101069515' name: Integrated Germanium Quantum Technology publication: Physical Review Applied publication_identifier: eissn: - 2331-7019 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Automated long-range compensation of an rf quantum dot sensor tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 22 year: '2024' ... --- OA_place: publisher OA_type: hybrid _id: '15018' abstract: - lang: eng text: The epitaxial growth of a strained Ge layer, which is a promising candidate for the channel material of a hole spin qubit, has been demonstrated on 300 mm Si wafers using commercially available Si0.3Ge0.7 strain relaxed buffer (SRB) layers. The assessment of the layer and the interface qualities for a buried strained Ge layer embedded in Si0.3Ge0.7 layers is reported. The XRD reciprocal space mapping confirmed that the reduction of the growth temperature enables the 2-dimensional growth of the Ge layer fully strained with respect to the Si0.3Ge0.7. Nevertheless, dislocations at the top and/or bottom interface of the Ge layer were observed by means of electron channeling contrast imaging, suggesting the importance of the careful dislocation assessment. The interface abruptness does not depend on the selection of the precursor gases, but it is strongly influenced by the growth temperature which affects the coverage of the surface H-passivation. The mobility of 2.7 × 105 cm2/Vs is promising, while the low percolation density of 3 × 1010 /cm2 measured with a Hall-bar device at 7 K illustrates the high quality of the heterostructure thanks to the high Si0.3Ge0.7 SRB quality. acknowledgement: The Ge project received funding from the European Union's Horizon Europe programme under the Grant Agreement 101069515 – IGNITE. Siltronic AG is acknowledged for providing the SRB wafers. This work was supported by Imec's Industrial Affiliation Program on Quantum Computing. article_number: '108231' article_processing_charge: Yes (in subscription journal) article_type: original author: - first_name: Yosuke full_name: Shimura, Yosuke last_name: Shimura - first_name: Clement full_name: Godfrin, Clement last_name: Godfrin - first_name: Andriy full_name: Hikavyy, Andriy last_name: Hikavyy - first_name: Roy full_name: Li, Roy last_name: Li - first_name: Juan L full_name: Aguilera Servin, Juan L id: 2A67C376-F248-11E8-B48F-1D18A9856A87 last_name: Aguilera Servin orcid: 0000-0002-2862-8372 - first_name: Georgios full_name: Katsaros, Georgios id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros orcid: 0000-0001-8342-202X - first_name: Paola full_name: Favia, Paola last_name: Favia - first_name: Han full_name: Han, Han last_name: Han - first_name: Danny full_name: Wan, Danny last_name: Wan - first_name: Kristiaan full_name: de Greve, Kristiaan last_name: de Greve - first_name: Roger full_name: Loo, Roger last_name: Loo citation: ama: Shimura Y, Godfrin C, Hikavyy A, et al. Compressively strained epitaxial Ge layers for quantum computing applications. Materials Science in Semiconductor Processing. 2024;174(5). doi:10.1016/j.mssp.2024.108231 apa: Shimura, Y., Godfrin, C., Hikavyy, A., Li, R., Aguilera Servin, J. L., Katsaros, G., … Loo, R. (2024). Compressively strained epitaxial Ge layers for quantum computing applications. Materials Science in Semiconductor Processing. Elsevier. https://doi.org/10.1016/j.mssp.2024.108231 chicago: Shimura, Yosuke, Clement Godfrin, Andriy Hikavyy, Roy Li, Juan L Aguilera Servin, Georgios Katsaros, Paola Favia, et al. “Compressively Strained Epitaxial Ge Layers for Quantum Computing Applications.” Materials Science in Semiconductor Processing. Elsevier, 2024. https://doi.org/10.1016/j.mssp.2024.108231. ieee: Y. Shimura et al., “Compressively strained epitaxial Ge layers for quantum computing applications,” Materials Science in Semiconductor Processing, vol. 174, no. 5. Elsevier, 2024. ista: Shimura Y, Godfrin C, Hikavyy A, Li R, Aguilera Servin JL, Katsaros G, Favia P, Han H, Wan D, de Greve K, Loo R. 2024. Compressively strained epitaxial Ge layers for quantum computing applications. Materials Science in Semiconductor Processing. 174(5), 108231. mla: Shimura, Yosuke, et al. “Compressively Strained Epitaxial Ge Layers for Quantum Computing Applications.” Materials Science in Semiconductor Processing, vol. 174, no. 5, 108231, Elsevier, 2024, doi:10.1016/j.mssp.2024.108231. short: Y. Shimura, C. Godfrin, A. Hikavyy, R. Li, J.L. Aguilera Servin, G. Katsaros, P. Favia, H. Han, D. Wan, K. de Greve, R. Loo, Materials Science in Semiconductor Processing 174 (2024). date_created: 2024-02-22T14:10:40Z date_published: 2024-05-20T00:00:00Z date_updated: 2025-04-14T08:01:27Z day: '20' ddc: - '530' department: - _id: GeKa - _id: NanoFab doi: 10.1016/j.mssp.2024.108231 external_id: isi: - '001188520000001' file: - access_level: open_access checksum: 62e8e9ae960387a3dca32ec7f5e413ab content_type: application/pdf creator: dernst date_created: 2024-07-22T11:56:08Z date_updated: 2024-07-22T11:56:08Z file_id: '17312' file_name: 2024_MaterialsScience_Shimura.pdf file_size: 4220165 relation: main_file success: 1 file_date_updated: 2024-07-22T11:56:08Z has_accepted_license: '1' intvolume: ' 174' isi: 1 issue: '5' keyword: - Mechanical Engineering - Mechanics of Materials - Condensed Matter Physics - General Materials Science language: - iso: eng month: '05' oa: 1 oa_version: Published Version project: - _id: 34c0acea-11ca-11ed-8bc3-8775e10fd452 grant_number: '101069515' name: Integrated Germanium Quantum Technology publication: Materials Science in Semiconductor Processing publication_identifier: issn: - 1369-8001 publication_status: published publisher: Elsevier quality_controlled: '1' scopus_import: '1' status: public title: Compressively strained epitaxial Ge layers for quantum computing applications tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 174 year: '2024' ... --- DOAJ_listed: '1' _id: '15320' abstract: - lang: eng text: Josephson diodes are superconducting elements that show an asymmetry in the critical current depending on the direction of the current. Here, we theoretically explore how an alternating current bias can tune the response of such a diode. We show that for slow driving there is always a regime where the system can only carry zero-voltage dc current in one direction, thus effectively behaving as an ideal Josephson diode. Under fast driving, the diode efficiency is also tunable, although the ideal regime cannot be reached in this case. We also investigate the residual dissipation due to the time-dependent current bias and show that it remains small. All our conclusions are solely based on the critical current asymmetry of the junction, and are thus compatible with any Josephson diode. acknowledgement: "We acknowledge support from research grants Spanish CM Talento Program (Project No. 2022-T1/IND-24070), Spanish Ministry of Science, innovation, and Universities through Grant No. PID2022-140552NA-I00, Swedish Research Council under Grant Agreement No. 2020-03412, the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme under Grant Agreement No. 856526, Nanolund, FWF Project with [82],\r\nand Microsoft Corporation. " article_number: L022002 article_processing_charge: Yes article_type: letter_note author: - first_name: Rubén full_name: Seoane Souto, Rubén last_name: Seoane Souto - first_name: Martin full_name: Leijnse, Martin last_name: Leijnse - first_name: Constantin full_name: Schrade, Constantin last_name: Schrade - first_name: Marco full_name: Valentini, Marco id: C0BB2FAC-D767-11E9-B658-BC13E6697425 last_name: Valentini - first_name: Georgios full_name: Katsaros, Georgios id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros orcid: 0000-0001-8342-202X - first_name: Jeroen full_name: Danon, Jeroen last_name: Danon citation: ama: Seoane Souto R, Leijnse M, Schrade C, Valentini M, Katsaros G, Danon J. Tuning the Josephson diode response with an ac current. Physical Review Research. 2024;6(2). doi:10.1103/PhysRevResearch.6.L022002 apa: Seoane Souto, R., Leijnse, M., Schrade, C., Valentini, M., Katsaros, G., & Danon, J. (2024). Tuning the Josephson diode response with an ac current. Physical Review Research. American Physical Society. https://doi.org/10.1103/PhysRevResearch.6.L022002 chicago: Seoane Souto, Rubén, Martin Leijnse, Constantin Schrade, Marco Valentini, Georgios Katsaros, and Jeroen Danon. “Tuning the Josephson Diode Response with an Ac Current.” Physical Review Research. American Physical Society, 2024. https://doi.org/10.1103/PhysRevResearch.6.L022002. ieee: R. Seoane Souto, M. Leijnse, C. Schrade, M. Valentini, G. Katsaros, and J. Danon, “Tuning the Josephson diode response with an ac current,” Physical Review Research, vol. 6, no. 2. American Physical Society, 2024. ista: Seoane Souto R, Leijnse M, Schrade C, Valentini M, Katsaros G, Danon J. 2024. Tuning the Josephson diode response with an ac current. Physical Review Research. 6(2), L022002. mla: Seoane Souto, Rubén, et al. “Tuning the Josephson Diode Response with an Ac Current.” Physical Review Research, vol. 6, no. 2, L022002, American Physical Society, 2024, doi:10.1103/PhysRevResearch.6.L022002. short: R. Seoane Souto, M. Leijnse, C. Schrade, M. Valentini, G. Katsaros, J. Danon, Physical Review Research 6 (2024). date_created: 2024-04-14T22:01:02Z date_published: 2024-04-01T00:00:00Z date_updated: 2025-05-14T09:31:50Z day: '01' ddc: - '530' department: - _id: GeKa doi: 10.1103/PhysRevResearch.6.L022002 file: - access_level: open_access checksum: 7b9cb3b17d89f392bd582e30d7a72a29 content_type: application/pdf creator: dernst date_created: 2024-04-17T07:14:53Z date_updated: 2024-04-17T07:14:53Z file_id: '15327' file_name: 2024_PhysReviewResearch_Souto.pdf file_size: 1073544 relation: main_file success: 1 file_date_updated: 2024-04-17T07:14:53Z has_accepted_license: '1' intvolume: ' 6' issue: '2' language: - iso: eng month: '04' oa: 1 oa_version: Published Version publication: Physical Review Research publication_identifier: eissn: - 2643-1564 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Tuning the Josephson diode response with an ac current tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 6 year: '2024' ... --- _id: '17389' abstract: - lang: eng text: The potential of Si and SiGe-based devices for the scaling of quantum circuits is tainted by device variability. Each device needs to be tuned to operation conditions and each device realisation requires a different tuning protocol. We demonstrate that it is possible to automate the tuning of a 4-gate Si FinFET, a 5-gate GeSi nanowire and a 7-gate Ge/SiGe heterostructure double quantum dot device from scratch with the same algorithm. We achieve tuning times of 30, 10, and 92 min, respectively. The algorithm also provides insight into the parameter space landscape for each of these devices, allowing for the characterization of the regions where double quantum dot regimes are found. These results show that overarching solutions for the tuning of quantum devices are enabled by machine learning. acknowledged_ssus: - _id: NanoFab acknowledgement: We acknowledge Ang Li, Erik P. A. M. Bakkers (University of Eindhoven) for the fabrication of the Ge/Si nanowire. This work was supported by the Royal Society, the EPSRC National Quantum Technology Hub in Networked Quantum Information Technology (EP/M013243/1), Quantum Technology Capital (EP/N014995/1), EPSRC Platform Grant (EP/R029229/1), the European Research Council (Grant agreement 948932), the Swiss Nanoscience Institute, the NCCR SPIN, the EU H2020 European Microkelvin Platform EMP grant No. 824109, the Scientific Service Units of IST Austria through resources provided by the nanofabrication facility, the FWF-I 05060 and the FWF-P 30207 project. article_number: '17281' article_processing_charge: Yes article_type: original arxiv: 1 author: - first_name: B. full_name: Severin, B. last_name: Severin - first_name: D. T. full_name: Lennon, D. T. last_name: Lennon - first_name: L. C. full_name: Camenzind, L. C. last_name: Camenzind - first_name: F. full_name: Vigneau, F. last_name: Vigneau - first_name: F. full_name: Fedele, F. last_name: Fedele - first_name: Daniel full_name: Jirovec, Daniel id: 4C473F58-F248-11E8-B48F-1D18A9856A87 last_name: Jirovec orcid: 0000-0002-7197-4801 - first_name: A. full_name: Ballabio, A. last_name: Ballabio - first_name: D. full_name: Chrastina, D. last_name: Chrastina - first_name: G. full_name: Isella, G. last_name: Isella - first_name: M. full_name: de Kruijf, M. last_name: de Kruijf - first_name: M. J. full_name: Carballido, M. J. last_name: Carballido - first_name: S. full_name: Svab, S. last_name: Svab - first_name: A. V. full_name: Kuhlmann, A. V. last_name: Kuhlmann - first_name: S. full_name: Geyer, S. last_name: Geyer - first_name: F. N. M. full_name: Froning, F. N. M. last_name: Froning - first_name: H. full_name: Moon, H. last_name: Moon - first_name: M. A. full_name: Osborne, M. A. last_name: Osborne - first_name: D. full_name: Sejdinovic, D. last_name: Sejdinovic - first_name: Georgios full_name: Katsaros, Georgios id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros orcid: 0000-0001-8342-202X - first_name: D. M. full_name: Zumbühl, D. M. last_name: Zumbühl - first_name: G. A. D. full_name: Briggs, G. A. D. last_name: Briggs - first_name: N. full_name: Ares, N. last_name: Ares citation: ama: Severin B, Lennon DT, Camenzind LC, et al. Cross-architecture tuning of silicon and SiGe-based quantum devices using machine learning. Scientific Reports. 2024;14. doi:10.1038/s41598-024-67787-z apa: Severin, B., Lennon, D. T., Camenzind, L. C., Vigneau, F., Fedele, F., Jirovec, D., … Ares, N. (2024). Cross-architecture tuning of silicon and SiGe-based quantum devices using machine learning. Scientific Reports. Springer Nature. https://doi.org/10.1038/s41598-024-67787-z chicago: Severin, B., D. T. Lennon, L. C. Camenzind, F. Vigneau, F. Fedele, Daniel Jirovec, A. Ballabio, et al. “Cross-Architecture Tuning of Silicon and SiGe-Based Quantum Devices Using Machine Learning.” Scientific Reports. Springer Nature, 2024. https://doi.org/10.1038/s41598-024-67787-z. ieee: B. Severin et al., “Cross-architecture tuning of silicon and SiGe-based quantum devices using machine learning,” Scientific Reports, vol. 14. Springer Nature, 2024. ista: Severin B, Lennon DT, Camenzind LC, Vigneau F, Fedele F, Jirovec D, Ballabio A, Chrastina D, Isella G, de Kruijf M, Carballido MJ, Svab S, Kuhlmann AV, Geyer S, Froning FNM, Moon H, Osborne MA, Sejdinovic D, Katsaros G, Zumbühl DM, Briggs GAD, Ares N. 2024. Cross-architecture tuning of silicon and SiGe-based quantum devices using machine learning. Scientific Reports. 14, 17281. mla: Severin, B., et al. “Cross-Architecture Tuning of Silicon and SiGe-Based Quantum Devices Using Machine Learning.” Scientific Reports, vol. 14, 17281, Springer Nature, 2024, doi:10.1038/s41598-024-67787-z. short: B. Severin, D.T. Lennon, L.C. Camenzind, F. Vigneau, F. Fedele, D. Jirovec, A. Ballabio, D. Chrastina, G. Isella, M. de Kruijf, M.J. Carballido, S. Svab, A.V. Kuhlmann, S. Geyer, F.N.M. Froning, H. Moon, M.A. Osborne, D. Sejdinovic, G. Katsaros, D.M. Zumbühl, G.A.D. Briggs, N. Ares, Scientific Reports 14 (2024). date_created: 2024-08-05T08:50:51Z date_published: 2024-07-27T00:00:00Z date_updated: 2025-09-08T08:49:16Z day: '27' ddc: - '530' department: - _id: GeKa doi: 10.1038/s41598-024-67787-z external_id: arxiv: - '2107.12975' isi: - '001281273100062' pmid: - '39068242' file: - access_level: open_access checksum: 0b34b89e5f4f3f7b32ffadf104394594 content_type: application/pdf creator: dernst date_created: 2024-08-05T08:52:14Z date_updated: 2024-08-05T08:52:14Z file_id: '17390' file_name: 2024_ScientificReports_Severin.pdf file_size: 2255741 relation: main_file success: 1 file_date_updated: 2024-08-05T08:52:14Z has_accepted_license: '1' intvolume: ' 14' isi: 1 language: - iso: eng month: '07' oa: 1 oa_version: Published Version pmid: 1 project: - _id: c0977eea-5a5b-11eb-8a69-a862db0cf4d1 grant_number: I05060 name: High impedance circuit quantum electrodynamics with hole spins - _id: 2641CE5E-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P30207 name: Hole spin orbit qubits in Ge quantum wells publication: Scientific Reports publication_identifier: issn: - 2045-2322 publication_status: published publisher: Springer Nature quality_controlled: '1' related_material: record: - id: '10066' relation: earlier_version status: public scopus_import: '1' status: public title: Cross-architecture tuning of silicon and SiGe-based quantum devices using machine learning tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 14 year: '2024' ... --- APC_amount: 6468 EUR DOAJ_listed: '1' OA_place: publisher OA_type: gold _id: '14793' abstract: - lang: eng text: Superconductor/semiconductor hybrid devices have attracted increasing interest in the past years. Superconducting electronics aims to complement semiconductor technology, while hybrid architectures are at the forefront of new ideas such as topological superconductivity and protected qubits. In this work, we engineer the induced superconductivity in two-dimensional germanium hole gas by varying the distance between the quantum well and the aluminum. We demonstrate a hard superconducting gap and realize an electrically and flux tunable superconducting diode using a superconducting quantum interference device (SQUID). This allows to tune the current phase relation (CPR), to a regime where single Cooper pair tunneling is suppressed, creating a sin(2y) CPR. Shapiro experiments complement this interpretation and the microwave drive allows to create a diode with ≈ 100% efficiency. The reported results open up the path towards integration of spin qubit devices, microwave resonators and (protected) superconducting qubits on the same silicon technology compatible platform. acknowledged_ssus: - _id: M-Shop - _id: NanoFab acknowledgement: "We acknowledge Alexander Brinkmann, Alessandro Crippa, Francesco Giazotto, Andrew Higginbotham, Andrea Iorio, Giordano Scappucci, Christian Schonenberger, and Lukas Splitthoff for helpful discussions. We thank Marcel Verheijen for the support in the TEM analysis. This research and related results were made possible with the support of the NOMIS\r\nFoundation. It was supported by the Scientific Service Units of ISTA through resources provided by the MIBA Machine Shop and the nanofabrication facility, the European Union’s Horizon 2020 research andinnovation programme under Grant Agreement No 862046, the HORIZONRIA\r\n101069515 project, the European Innovation Council Pathfinder grant no. 101115315 (QuKiT), and the FWF Projects #P-32235, #P-36507 and #F-8606. For the purpose of open access, the authors have applied a CC BY public copyright licence to any Author Accepted Manuscript version arising from this submission. R.S.S. acknowledges Spanish CM “Talento Program\"\r\nProject No. 2022-T1/IND-24070. J.J. acknowledges European Research Council TOCINA 834290." article_number: '169' article_processing_charge: Yes article_type: original author: - first_name: Marco full_name: Valentini, Marco id: C0BB2FAC-D767-11E9-B658-BC13E6697425 last_name: Valentini - first_name: Oliver full_name: Sagi, Oliver id: 71616374-A8E9-11E9-A7CA-09ECE5697425 last_name: Sagi - first_name: Levon full_name: Baghumyan, Levon id: 7aa1f788-b527-11ee-aa9e-e6111a79e0c7 last_name: Baghumyan - first_name: Thijs full_name: de Gijsel, Thijs id: a0ece13c-b527-11ee-929d-bad130106eee last_name: de Gijsel - first_name: Jason full_name: Jung, Jason id: 4C9ACE7A-F248-11E8-B48F-1D18A9856A87 last_name: Jung - first_name: Stefano full_name: Calcaterra, Stefano last_name: Calcaterra - first_name: Andrea full_name: Ballabio, Andrea last_name: Ballabio - first_name: Juan L full_name: Aguilera Servin, Juan L id: 2A67C376-F248-11E8-B48F-1D18A9856A87 last_name: Aguilera Servin orcid: 0000-0002-2862-8372 - first_name: Kushagra full_name: Aggarwal, Kushagra id: b22ab905-3539-11eb-84c3-fc159dcd79cb last_name: Aggarwal orcid: 0000-0001-9985-9293 - first_name: Marian full_name: Janik, Marian id: 396A1950-F248-11E8-B48F-1D18A9856A87 last_name: Janik orcid: 0009-0003-9037-8831 - first_name: Thomas full_name: Adletzberger, Thomas id: 38756BB2-F248-11E8-B48F-1D18A9856A87 last_name: Adletzberger - first_name: Rubén full_name: Seoane Souto, Rubén last_name: Seoane Souto - first_name: Martin full_name: Leijnse, Martin last_name: Leijnse - first_name: Jeroen full_name: Danon, Jeroen last_name: Danon - first_name: Constantin full_name: Schrade, Constantin last_name: Schrade - first_name: Erik full_name: Bakkers, Erik last_name: Bakkers - first_name: Daniel full_name: Chrastina, Daniel last_name: Chrastina - first_name: Giovanni full_name: Isella, Giovanni last_name: Isella - first_name: Georgios full_name: Katsaros, Georgios id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros orcid: 0000-0001-8342-202X citation: ama: Valentini M, Sagi O, Baghumyan L, et al. Parity-conserving Cooper-pair transport and ideal superconducting diode in planar germanium. Nature Communications. 2024;15. doi:10.1038/s41467-023-44114-0 apa: Valentini, M., Sagi, O., Baghumyan, L., de Gijsel, T., Jung, J., Calcaterra, S., … Katsaros, G. (2024). Parity-conserving Cooper-pair transport and ideal superconducting diode in planar germanium. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-023-44114-0 chicago: Valentini, Marco, Oliver Sagi, Levon Baghumyan, Thijs de Gijsel, Jason Jung, Stefano Calcaterra, Andrea Ballabio, et al. “Parity-Conserving Cooper-Pair Transport and Ideal Superconducting Diode in Planar Germanium.” Nature Communications. Springer Nature, 2024. https://doi.org/10.1038/s41467-023-44114-0. ieee: M. Valentini et al., “Parity-conserving Cooper-pair transport and ideal superconducting diode in planar germanium,” Nature Communications, vol. 15. Springer Nature, 2024. ista: Valentini M, Sagi O, Baghumyan L, de Gijsel T, Jung J, Calcaterra S, Ballabio A, Aguilera Servin JL, Aggarwal K, Janik M, Adletzberger T, Seoane Souto R, Leijnse M, Danon J, Schrade C, Bakkers E, Chrastina D, Isella G, Katsaros G. 2024. Parity-conserving Cooper-pair transport and ideal superconducting diode in planar germanium. Nature Communications. 15, 169. mla: Valentini, Marco, et al. “Parity-Conserving Cooper-Pair Transport and Ideal Superconducting Diode in Planar Germanium.” Nature Communications, vol. 15, 169, Springer Nature, 2024, doi:10.1038/s41467-023-44114-0. short: M. Valentini, O. Sagi, L. Baghumyan, T. de Gijsel, J. Jung, S. Calcaterra, A. Ballabio, J.L. Aguilera Servin, K. Aggarwal, M. Janik, T. Adletzberger, R. Seoane Souto, M. Leijnse, J. Danon, C. Schrade, E. Bakkers, D. Chrastina, G. Isella, G. Katsaros, Nature Communications 15 (2024). corr_author: '1' date_created: 2024-01-14T23:00:56Z date_published: 2024-01-02T00:00:00Z date_updated: 2025-10-15T06:31:47Z day: '02' ddc: - '530' department: - _id: GeKa doi: 10.1038/s41467-023-44114-0 ec_funded: 1 external_id: isi: - '001142794000839' pmid: - '38167818' file: - access_level: open_access checksum: ef79173b45eeaf984ffa61ef2f8a52ab content_type: application/pdf creator: dernst date_created: 2024-01-17T11:03:00Z date_updated: 2024-01-17T11:03:00Z file_id: '14825' file_name: 2024_NatureComm_Valentini.pdf file_size: 2336595 relation: main_file success: 1 file_date_updated: 2024-01-17T11:03:00Z has_accepted_license: '1' intvolume: ' 15' isi: 1 language: - iso: eng month: '01' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 237E5020-32DE-11EA-91FC-C7463DDC885E call_identifier: H2020 grant_number: '862046' name: TOPOLOGICALLY PROTECTED AND SCALABLE QUANTUM BITS - _id: 34c0acea-11ca-11ed-8bc3-8775e10fd452 grant_number: '101069515' name: Integrated Germanium Quantum Technology - _id: bdc2ca30-d553-11ed-ba76-cf164a5bb811 grant_number: '101115315' name: Quantum bits with Kitaev Transmons - _id: 237B3DA4-32DE-11EA-91FC-C7463DDC885E call_identifier: FWF grant_number: P32235 name: Towards scalable hut wire quantum devices - _id: bd8bd29e-d553-11ed-ba76-f0070d4b237a grant_number: P36507 name: Merging spin and superconducting qubits in planar Ge - _id: 34a66131-11ca-11ed-8bc3-a31681c6b03e grant_number: F8606 name: 'Center for Correlated Quantum Materials and Solid State Quantum Systems: Conventional and unconventional topological superconductors' - _id: 3AC91DDA-15DF-11EA-824D-93A3E7B544D1 call_identifier: FWF name: FWF Open Access Fund publication: Nature Communications publication_identifier: eissn: - 2041-1723 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Parity-conserving Cooper-pair transport and ideal superconducting diode in planar germanium tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 15 year: '2024' ...