Broadband Nonreciprocity Enabled by Strong Coupling of Magnons and Microwave Photons
Xufeng Zhang, Alexey Galda, Xu Han, Dafei Jin, V. M. Vinokur
Abstract
On-chip signal transmission in both the classical and quantum regimes would benefit from broadband nonreciprocity (strictly one-way transmission) to overcome signal instabilities and enhance channel capacity. Engineering such nonreciprocity in integrated microwave circuits has long been a challenge. This study utilizes strong coupling between chiral microwave photons and magnons, those collective excitations of magnetization, to break time-reversal symmetry and increase the nonreciprocity bandwidth by two orders of magnitude. This approach is promising for an emerging class of nonreciprocal devices for coherent information processing.
Topics & Concepts
BroadbandReciprocity (cultural anthropology)PhysicsMicrowaveYttrium iron garnetMagnonPhotonTransmission (telecommunications)MagnonicsCoupling (piping)Condensed matter physicsFerromagnetismOpticsTelecommunicationsQuantum mechanicsComputer scienceMaterials scienceElectronSpin Hall effectSpin polarizationSocial psychologyMetallurgyPsychologyMechanical and Optical ResonatorsQuantum optics and atomic interactionsAtomic and Subatomic Physics Research