Nanomagnonic cavities for strong spin-magnon coupling

• URL: http://arxiv.org/abs/2007.11595v1
• Date: Wed, 22 Jul 2020 18:00:04 GMT
• Title: Nanomagnonic cavities for strong spin-magnon coupling
• Authors: Tom\'a\v{s} Neuman, Derek S. Wang, and Prineha Narang
• Abstract summary: We show that the field in such nanocavities can efficiently couple to isolated spin emitters (spin qubits) positioned close to the nanoparticles. This paves the way towards magnon-based quantum networks and magnon-mediated quantum gates.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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