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Topological spin textures enabling quantum transmission

Ji Zou1,*, Stefano Bosco2, Jelena Klinovaja1, and Daniel Loss1

  • *Contact author: ji.zou@unibas.ch
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Phys. Rev. Research 7, 043036 – Published 9 October, 2025

DOI: https://doi.org/10.1103/tzmn-rz7b

Abstract

Quantum spintronics is an emerging field focused on developing novel applications by utilizing the quantum coherence of magnetic systems. A key challenge in this context is achieving scalable long-range quantum information transmission in magnetic systems. Here, we propose a novel transmission scheme based on topological spin textures in a hybrid architecture combining a magnetic racetrack and localized spin qubits. We demonstrate this principle by employing the domain wall (DW)—the most fundamental texture—to transport quantum signal between distant qubits. We introduce a measurement-free protocol that utilizes DW mobility to enable high-fidelity and tunable entanglement generation. Furthermore, we demonstrate that spin qubits can function as quantum stations on the racetrack, enabling flexible state transfer among fast-moving DWs on a single track. Finally, we discuss concrete material platforms to implement the proposed scheme. Our work introduces a new hybrid quantum platform that merges topological spin textures with solid-state qubits, offering a scalable architecture for quantum information processing and opening promising directions for quantum spintronics.

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Phys. Rev. Research 7, 043036– Published 9 October, 2025
  • Received 22 September 2024
  • Accepted 4 September 2025
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