Coherent and dissipative interactions between different quantum systems are essential for the construction of hybrid quantum systems and the investigation of novel quantum phenomena. Here, we propose and analyze a magnon-skyrmion hybrid quantum system, consisting of a micromagnet and nearby magnetic skyrmions. We predict a strong coupling mechanism between the magnonic mode of the micromagnet and the quantized helicity degree of freedom of the skyrmion. We show that with this hybrid setup it is possible to induce magnon-mediated nonreciprocal interactions and responses between distant skyrmion qubits or between skyrmion qubits and other quantum systems like superconducting qubits. This work provides a quantum platform for the investigation of diverse quantum effects and quantum information processing with magnetic microstructures.
@article{arxiv.2404.09388,
title = {Magnon-Skyrmion Hybrid Quantum Systems: Tailoring Interactions via Magnons},
author = {Xue-Feng Pan and Peng-Bo Li and Xin-Lei Hei and Xichao Zhang and Masahito Mochizuki and Fu-Li Li and Franco Nori},
journal= {arXiv preprint arXiv:2404.09388},
year = {2024}
}