Ultrastrongly coupled and directionally nonreciprocal magnon polaritons in magnetochiral metamolecules

Kentaro Mita; Takahiro Chiba; Toshiyuki Kodama; Tetsuya Ueda; Toshihiro Nakanishi; Kei Sawada; Satoshi Tomita

doi:10.1103/PhysRevApplied.23.L011004

Letter

Ultrastrongly coupled and directionally nonreciprocal magnon polaritons in magnetochiral metamolecules

Kentaro Mita ¹, Takahiro Chiba ^2,3, Toshiyuki Kodama ⁴, Tetsuya Ueda ⁵, Toshihiro Nakanishi ⁶, Kei Sawada⁷, and Satoshi Tomita ^1,4,*

¹Department of Physics, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
²Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan
³Department of Applied Physics, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
⁴Institute for Excellence in Higher Education, Tohoku University, Sendai 980-8576, Japan
⁵Department of Electrical Engineering and Electronics, Kyoto Institute of Technology, Kyoto 606-8585, Japan
⁶Department of Electronic Science and Engineering, Kyoto University, Kyoto 615-8510, Japan
⁷RIKEN SPring-8 Center, Sayo 679-5148, Japan

^*Contact author: tomita@tohoku.ac.jp

PDF

Phys. Rev. Applied 23, L011004 – Published 17 January, 2025

DOI: https://doi.org/10.1103/PhysRevApplied.23.L011004

Abstract

We experimentally demonstrate magnon polaritons with ultrastrong coupling and directional nonreciprocity in a metamolecule lacking time-reversal and space-inversion symmetries at room temperature. These experimental results are reproduced well via numerical simulations and theoretical considerations. Ultrastrong coupling is due to a direct interaction of magnons in the magnetic meta-atom with microwave photons confined in the chiral meta-atom as a resonator. Our results reveal a crucial step in identifying deep strongly coupled and optically moving magnon polaritons for hybrid quantum systems, synthetic gauge fields, and quasiparticle “chemistry” using metamaterials.

Physical Review Applied

Export citation

Export citation

Ultrastrongly coupled and directionally nonreciprocal magnon polaritons in magnetochiral metamolecules

Abstract

Physics Subject Headings (PhySH)

Authorization Required

Other Options

Supplemental Material (Subscription Required)

References (Subscription Required)

Outline

Information

Filter

Filter

Article Lookup

Enter a citation

Ultrastrongly coupled and directionally nonreciprocal magnon polaritons in magnetochiral metamolecules

Abstract

Physics Subject Headings (PhySH)

Authorization Required

Log in via your institution

Log in via APS Member Subscription

Other Options

Supplemental Material (Subscription Required)

References (Subscription Required)