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RESEARCH PRODUCT
Magnetoelectric Cavity Magnonics in Skyrmion Crystals
Tomoki HirosawaAlexander MookJelena KlinovajaDaniel Losssubject
Strongly Correlated Electrons (cond-mat.str-el)Condensed Matter - Mesoscale and Nanoscale PhysicsGeneral Computer ScienceCondensed Matter::OtherApplied MathematicsFOS: Physical sciencesPhysics::OpticsGeneral Physics and AstronomyElectronic Optical and Magnetic MaterialsCondensed Matter::Materials ScienceCondensed Matter - Strongly Correlated ElectronsMesoscale and Nanoscale Physics (cond-mat.mes-hall)Condensed Matter::Strongly Correlated ElectronsElectrical and Electronic EngineeringMathematical Physicsdescription
We present a theory of magnetoelectric magnon-photon coupling in cavities hosting noncentrosymmetric magnets. Analogously to nonreciprocal phenomena in multiferroics, the magnetoelectric coupling is time-reversal and inversion asymmetric. This asymmetry establishes a means for exceptional tunability of magnon-photon coupling, which can be switched on and off by reversing the magnetization direction. Taking the multiferroic skyrmion-host Cu$_2$OSeO$_3$ with ultralow magnetic damping as an example, we reveal the electrical activity of skyrmion eigenmodes and propose it for magnon-photon splitting of ``magnetically dark'' elliptic modes. Furthermore, we predict a cavity-induced magnon-magnon coupling between magnetoelectrically active skyrmion excitations. We discuss applications in quantum information processing by proposing protocols for all-electrical magnon-mediated photon quantum gates, and a photon-mediated SPLIT operation of magnons. Our study highlights magnetoelectric cavity magnonics as a novel platform for realizing quantum-hybrid systems and the coherent transduction between photons and magnons in topological magnetic textures.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2022-01-01 | PRX Quantum |