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

Jasmin Graf, Sanchar Sharma, Hans Huebl, and Silvia Viola Kusminskiy
Phys. Rev. Research 3, 013277 – Published 24 March 2021

Abstract

We put forward the concept of an optomagnonic crystal: a periodically patterned structure at the microscale based on a magnetic dielectric, which can co-localize magnon and photon modes. The co-localization in small volumes can result in large values of the photon-magnon coupling at the single quanta level, which opens perspectives for quantum information processing and quantum conversion schemes with these systems. We study theoretically a simple geometry consisting of a one-dimensional array of holes with an abrupt defect, considering the ferrimagnet yttrium iron garnet (YIG) as the basis material. We show that both magnon and photon modes can be localized at the defect, and use symmetry arguments to select an optimal pair of modes in order to maximize the coupling. We show that an optomagnonic coupling in the kHz range is achievable in this geometry, and discuss possible optimization routes in order to improve both coupling strengths and optical losses.

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  • Received 8 December 2020
  • Revised 11 February 2021
  • Accepted 3 March 2021

DOI:https://doi.org/10.1103/PhysRevResearch.3.013277

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Open access publication funded by the Max Planck Society.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter & Materials Physics

Authors & Affiliations

Jasmin Graf1,2, Sanchar Sharma1, Hans Huebl3,4,5, and Silvia Viola Kusminskiy1,2

  • 1Max Planck Institute for the Science of Light, Staudtstraße 2, 91058 Erlangen, Germany
  • 2Department of Physics, University Erlangen-Nürnberg, Staudtstraße 7, 91058 Erlangen, Germany
  • 3Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, Walther-Meissner-Straße 8, 85748 Garching, Germany
  • 4Physik-Department, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
  • 5Munich Center for Quantum Science and Technology (MCQST), Schellingstraße 4, 80799 München, Germany

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Vol. 3, Iss. 1 — March - May 2021

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