Advances in Coherent Magnonics
Burkard Hillebrands, Technische Universität Kaiserslautern
September 24, 2021
Magnonics deals with dynamic excitations of magnetically ordered materials. These excitations—magnons—constitute a powerful tool for data processing on the micro and nanoscale. In this talk, I will provide an overview of the fundamentals and current trends in coherent magnonics . I will discuss the implementation in magnetic systems of novel concepts borrowed from integrated optics. Examples are directional couplers and quantum-classical analogy devices, such as a magnonic Stimulated Raman Adiabatic Passage (STIRAP) device . Also, I will address macroscopic quantum phenomena, such as coherent magnon Bose-Einstein condensates [3,4], and will present a way to enable room-temperature quantum computing functionalities using the magnon condensates.
 P. Pirro, V. I. Vasyuchka, A. A. Serga, and B. Hillebrands, Advances in coherent magnonics, Nat. Rev. Mater. (2021). https://doi.org/10.1038/s41578-021-00332-w
 Q. Wang, T. Brächer, M. Fleischhauer, B. Hillebrands, and P. Pirro, Stimulated-Raman-adiabatic-passage mechanism in a magnonic environment, Appl. Phys. Lett. 118, 182404 (2021).
 M. Mohseni, A. Qaiumzadeh, A. A. Serga, A. Brataas, B. Hillebrands, and P. Pirro, Bose-Einstein condensation of nonequilibrium magnons in confined systems, New J. Phys. 22, 083080 (2020).
 T. B. Noack, V. I. Vasyuchka, A. Pomyalov, V. S. L'vov, A. A. Serga, and B. Hillebrands, Evolution of room-temperature magnon gas: Toward a coherent Bose-Einstein condensate, Phys. Rev. B 104, L100410 (2021).