Magnetic Matchmaking: Hybrid Magnon Modes

Magnons interact with a wide variety of different excitations, including microwave and optical photons, phonons, and other magnons. Resulting hybrid magnon dynamic excitations open new pathways for hybrid quantum information systems. I will discuss examples and strategies for essential building blocks for more complex integrated coherent quantum systems. This includes strong magnon-photon coupling in coplanar superconducting microwave photon resonators, long distant coupling between two magnon resonators, and nonreciprocal photon coupling due to magnons. Lastly, I will show how a superconducting qubit can be used for sensitively detecting magnon populations over a broad dynamic range. These examples illustrate the potential of magnons for coherently controlled interactions ultimately even in the single quantum limit. This work was supported by the U.S. Department of Energy, Office of Science, Materials Sciences and Engineering Division under Contract No. DE SC0022060.

Séminaire organisé dans le cadre du programme interdisciplinaire MAT-PULSE (Materials and Physics @ Ultimate Scale: Nanotech for a sustainable digital world)