Biblioteca Origen csic Identificador Nature Physics 22, 75–80 (2026) Identificador 17452473 (ISSN) Identificador http://hdl.handle.net/10261/435093 Identificador 10.1038/s41567-025-03106-1 Identificador https://www.scopus.com/pages/publications/105024805272?origin=resultslist Título Optimal operation of hole spin qubits Autor Bassi, M. Autor Rodríguez-Mena, E.A. Autor Brun, B. Autor Zihlmann, S. Autor Nguyen, T. Autor Champain, V. Autor Abadillo-Uriel, J. C. Autor Bertrand, B. Autor Niebojewski, H. Autor Maurand, R. Autor Niquet, Y.-M. Autor Jehl, X. Autor De Franceschi, S. Autor Schmitt, V. Resumen Hole spins in silicon or germanium quantum dots have emerged as a capable platform for scalable solid-state quantum processors. In addition to benefiting from well-established manufacturing technologies, the large spin–orbit coupling of hole spin qubits enables fast control mediated by an electric field. Unfortunately, this coupling typically makes hole spin qubits susceptible to charge noise, which usually limits qubit coherence. Here we experimentally establish the existence of so-called sweet lines in the parameter space of field orientation where the qubit becomes insensitive to charge noise. We do this by varying the direction of a magnetic field applied to a silicon metal–oxide–semiconductor hole qubit. We also find that the observed sweet lines contain the points of maximal driving efficiency, in agreement with recent theoretical predictions. Furthermore, we show that moderate adjustments in gate voltages can substantially shift the sweet lines. This tunability allows several qubits to be simultaneously made insensitive to electrical noise, making it possible to design scalable qubit architectures that feature all-electrical spin control of many qubits. © The Author(s), under exclusive licence to Springer Nature Limited 2025. | This work is supported by the French National Research Agency under the programme France 2030 (PEPR PRESQUILE - ANR-22-PETQ-0002), by the European Union’s Horizon 2020 research innovation programme through projects QLSI1 and QLSI2 (Grant Agreement Nos. 951852 and 101135712, respectively) and the European Research Council project QuCube (Grant Agreement No. 810504). J.C.A.-U. is supported by Grant Nos. RYC2022-037527-I and PID2023-148257NA-I00 funded by MCIU/AEI/10.13039/501100011033 and by the ESF+. V.C. acknowledges support from the Program QuantForm-UGA ANR-21-CMAQ-0003 France 2030 and by the LabEx LANEF ANR-10-LABX-51-01. | Peer reviewed Editor Springer Nature Fecha de Publicación 2026-12-12 Tipo info:eu-repo/semantics/article | Postprint | info:eu-repo/semantics/acceptedVersion Idioma en Relación Nature Physics | https://doi.org/10.1038/s41567-025-03106-1 | Sí Derechos info:eu-repo/semantics/closedAccess Información OAI   ID oai:digital.csic.es:10261/435093 Última Modificación 2026-06-10