127670 20250307094029.0 doi 10.1103/PhysRevApplied.19.064060 sideral 134644 ART-2023-134644 eng Chiesa, A. Blueprint for a molecular-spin quantum processor 2023 Access copy available to the general public Unrestricted The implementation of a universal quantum processor still poses fundamental issues related to error mitigation and correction, which demand investigation of also platforms and computing schemes alternative to the main stream. A possibility is offered by employing multilevel logical units (qudits), naturally provided by molecular spins. Here we present the blueprint of a molecular spin quantum processor consisting of single molecular nanomagnets, acting as qudits, placed within superconducting resonators adapted to the size and interactions of these molecules to achieve a strong single spin-to-photon coupling. We show how to implement a universal set of gates in such a platform and to readout the final qudit state. Single-qudit unitaries (potentially embedding multiple qubits) are implemented by fast classical drives, while an alternative scheme is introduced to obtain two-qubit gates via resonant photon exchange. The latter is compared to the dispersive approach, finding in general a significant improvement. The performance of the platform is assessed by realistic numerical simulations of gate sequences, such as Deutsch-Josza and quantum simulation algorithms. The very good results demonstrate the feasibility of the molecular route towards a universal quantum processor. info:eu-repo/grantAgreement/ES/DGA/E09-17R-Q-MAD info:eu-repo/grantAgreement/EC/H2020/862893/EU/Molecular spin qudits offering new hope for quantum computing/FATMOLS This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 862893-FATMOLS info:eu-repo/grantAgreement/ES/MICINN-AEI/PID2020-115221GB-C41 info:eu-repo/grantAgreement/EUR/MICINN/TED2021-131447B-C21 info:eu-repo/grantAgreement/EUR/MICINN/TED2021-131447B-C22 info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 3.8 2023 PHYSICS, APPLIED 54 / 179 = 0.302 2023 Q2 T1 1.335 2023 Physics and Astronomy (miscellaneous) 2023 Q1 7.8 2023 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Roca, S. Chicco, S. de Ory, M.C. Gómez-León, A. Gomez, A. Zueco, D. (orcid)0000-0003-4478-1948 Luis, F. (orcid)0000-0001-6284-0521 Carretta, S. 19, 6 (2023), 064060 [17 pp.] Phys. rev. appl. Physical Review Applied 2331-7019 3996206 http://zaguan.unizar.es/record/127670/files/texto_completo.pdf Versión publicada 2689001 http://zaguan.unizar.es/record/127670/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:127670 articulos driver 2025-03-07-09:38:54 ARTICLE