Floquet engineering in hybrid magnetic quantum systems

Abstract:The advancement of magnonics has facilitated the utilization of hybrid magnetic systems in quantum technologies. A hybrid magnetic lattice formed by an array of superconducting loops and magnetic particles has been devised as a quantum bus to disseminate quantum resources among magnetic quantum entities serving as nodes of a quantum network. However, the lattice also exerts a decoherence effect on the quantum entities, which impairs its practical performance. By studying the non-Markovian dynamics of nitrogen-vacancy centers and magnon modes coupled to two independent hybrid magnetic lattices, we propose a Floquet-engineering scheme via periodic driving on the quantum entities to suppress decoherence. We find that significant steady-state entanglement is preserved when a Floquet bound state exists in the quasienergy spectrum of the system consisting of each driven quantum entity and its lattice. This result enables a precise manipulation of hybrid magnetic systems and benefits their applications in quantum networks.

arXiv:2501.02462 [quant-ph]

(or arXiv:2501.02462v2 [quant-ph] for this version)

https://doi.org/10.48550/arXiv.2501.02462 Focus to learn more arXiv-issued DOI via DataCite

https://doi.org/10.1038/s42005-026-02695-4 Focus to learn more DOI(s) linking to related resources

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