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arXiv · 2007.11595

Nanomagnonic cavities for strong spin-magnon coupling

Tomáš Neuman·Derek S. Wang·Prineha Narang
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Abstract

We present a theoretical approach to use ferro- or ferrimagnetic nanoparticles as microwave nanomagnonic cavities to concentrate microwave magnetic fields into deeply subwavelength volumes $\sim 10^{-13}$ mm$^3$. We show that the field in such nanocavities can efficiently couple to isolated spin emitters (spin qubits) positioned close to the nanoparticle surface reaching the single magnon-spin strong-coupling regime and mediate efficient long-range quantum state transfer between isolated spin emitters. Nanomagnonic cavities thus pave the way towards magnon-based quantum networks and magnon-mediated quantum gates.

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BibTeXRIS

Tomáš Neuman, Derek S. Wang, Prineha Narang. 2020-07-22. Nanomagnonic cavities for strong spin-magnon coupling. https://doi.org/10.1103/physrevlett.125.247702

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