Journal article

Coupling a Ge73 Nuclear Spin to an Electrostatically Defined Quantum Dot in Silicon

P Steinacker, G Goenka, RY Su, T Tanttu, WH Lim, S Serrano, T Botzem, JD Cifuentes, SQ Lim, JC McCallum, BC Johnson, FE Hudson, KW Chan, CC Escott, A Saraiva, CH Yang, V Mourik, A Morello, AS Dzurak, A Laucht

Physical Review Letters | American Physical Society (APS) | Published : 2026

DOI: 10.1103/49gt-msw9

Open access

Abstract

Single nuclear spins in silicon are a promising resource for quantum technologies due to their long coherence times and excellent control fidelities. Qubits and qudits have been encoded on donor nuclei, with successful demonstrations of Bell states and quantum memories on the spin-/21 P31 and cat-qubits on the spin-/27 Sb123 nuclei. Isoelectronic nuclear spins coupled to gate-defined quantum dots, such as the naturally occurring Si29 isotope, possess no additional charge and allow for the coupled electron to be shuttled without destroying the nuclear spin coherence. Here, we demonstrate the coupling of a spin-/29 Ge73 nuclear spin to a gate-defined quantum dot in SiMOS via Pauli spin blockad..

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University of Melbourne Researchers

Keywords

5108 Quantum Physics
5104 Condensed Matter Physics
51 Physical Sciences