Dresden 2026 – scientific programme
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QI: Fachverband Quanteninformation
QI 20: Metrology and Sensing
QI 20.6: Talk
Friday, March 13, 2026, 10:45–11:00, BEY/0137
Localization and coherent control of 25 nuclear spins in Silicon Carbide — •Pierre Kuna1, Erik Hesselmeier-Hüttman1, Phillip Schillinger1, Felix Gloistein1, Viktor Ivády2, Wolfgang Knolle3, Jawad Ul-Hassan4, Vadim Vorobyov1, and Jörg Wrachtrup1,5 — 13rd Institute of Physics, University of Stuttgart, Stuttgart, Germany — 2Eötvös Loránd University, Hungary — 3Department of Sensoric Surfaces and Functional Interfaces, Leibniz-Institute of Surface Engineering (IOM), Leipzig, Germany — 4Department of Physics, Chemistry and Biology, Linköping University, Linköping, Sweden — 5Max Planck Institute for solid state physics, Stuttgart, Germany
Nuclear spins coupled to optically addressable defects provide long-lived quantum memories[1] and scalable resources for quantum algorithms. For the V2 center in 4H-SiC, leveraging this potential requires precise knowledge of the surrounding nuclear-spin environment to refine DFT models and enable advanced multi-qubit algorithms[3,4].
We report ångström-level 3D localization of 25 naturally occurring 29Si and 13C spins around a single V2 center. Using correlation-spectroscopy SEDOR, Our work establishes a new state of the art in controlling nuclear spin cluster in 4H-SiC. By selecting multi-spin chains up to length four, we access and characterize new nuclear spins and reconstruct their couplings to the central electron and neighboring nuclei.
[1] M. Zhong, Nature 517, 177 (2015) [2] Abobeih, M.H., Nature 606, 884*889 (2022) [3] J. Randall*et al..Science374,1474-1478(2021)
Keywords: Quantum Sensing; Color center; Spin qubit; Quantum register; Silicon-Carbide