Hot quantum computing with antiferromagnetic vortices

Topological magnetic textures such as domain walls and skyrmions have recently emerged as promising candidates for quantum spintronic applications. Building on these advances, we investigate the quantum properties of recently proposed nanoscale antiferromagnetic vortices stabilized by the interfacial Dzyaloshinskii–Moriya interaction (iDMI). We propose a vortex-based qubit on an elliptical dot geometry where the quantum information is stored in the helicity degree of freedom. Single qubit gates are driven by modulation of the electric field and two qubit gates are enabled by magnon-mediated interactions between qubits, providing a complete set of operations for universal quantum computing. Extending this concept to a two-dimensional network offers a scalable route toward high-frequency quantum architectures. Our results highlight how antiferromagnetic vortices can serve as a promising platform for "hot" quantum computing, combining a high level of tunability with GHz regime operation.