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MA: Fachverband Magnetismus

MA 43: Magnetic Semiconductors, Magnetization Dynamics and Damping

MA 43.5: Talk

Thursday, March 21, 2024, 16:15–16:30, EB 202

Transmission Line Resonators and Lumped Element Resonators for Strong Coupling — •Anoop Kamalasanan — Martin Luther University Halle-Wittenberg

Superconducting (SC) resonators and their seamless integration have proven critical in recent progress of on-chip quantum systems. Specifically, they are commonly implemented as a primary component in hybrid quantum systems due to their high-Q resonance properties and their ability to couple various quantized excitations (e.g. magnons, photons, phonons). Devices based on SC resonators have demonstrated numerous instances of strong coupling. Coupled microwave photon-magnon systems have received great attention as an alternative approach to realize strong light-matter interactions using magnetic dipole coupling.

In this work, we present the fabrication and characterization of superconducting resonators, namely λ/2 resonator and lumped-element resonator, alongside simulations of their microwave transmission properties. After optimizing the design of these waveguides with finite element method simulations, NbN-based superconducting resonators are fabricated for magnon-based investigations of strong coupling.

Keywords: Strong Coupling; Hybrid Magnonics; Transmission Line Resonators; Lumped-Element Resonators