Design of an optomagnonic crystal: Towards optimal magnon-photon mode matching at the microscale

We put forward the concept of an optomagnonic crystal: a periodically patterned structure at microscale based on magnetic dielectric, which can co-localize magnon and photon modes. The co-localization in small volumes result large values photon-magnon coupling single quanta level, opens perspectives for quantum information processing conversion schemes with these systems. study theoretically simple geometry consisting one-dimensional array holes abrupt defect, considering ferrimagnet yttrium iron garnet (YIG) as basis material. show that both modes be localized use symmetry arguments to select optimal pair order maximize coupling. kHz range is achievable this geometry, discuss possible optimization routes improve strengths optical losses.4 MoreReceived 8 December 2020Revised 11 February 2021Accepted 3 March 2021DOI:https://doi.org/10.1103/PhysRevResearch.3.013277Published by American Physical Society under terms Creative Commons Attribution 4.0 International license. Further distribution work must maintain attribution author(s) published article's title, journal citation, DOI. Open access publication funded Max Planck Society.Published SocietyPhysics Subject Headings (PhySH)Research AreasFaraday effectMagneto-optical effectNanophotonicsPhysical SystemsNanostructuresTechniquesMicromagnetic modelingCondensed Matter, Materials & Applied Physics