Nonreciprocal Spin Wave Propagation Between Superconducting Waveguides on YSGG/YIG Thin-Film

ORAL

Abstract

Hybrid magnonic systems provide promising platforms for coherent information transfer and manipulation using magnons in magnetic materials, offering broadband frequency tunability and strong nonreciprocity [1, 2]. For on-chip quantum implementations, it is crucial to realize low-damping magnetic films that maintain coherence at cryogenic temperatures and can be seamlessly integrated with superconducting circuits. Here, we demonstrate nonreciprocal propagation of spin waves in a superconducting magnonic device composed of a 100-nm-thick Yttrium Iron Garnet (YIG) film grown on a cryogenically compatible Yttrium Scandium Gallium Garnet (YSGG) substrate and 30-nm-thick, 1-μm-wide NbN coplanar waveguide (CPW) antennas patterned on the YIG film. Both Damon–Eshbach (DE) and backward-volume (BV) spin wave modes were observed, with the DE mode exhibiting pronounced nonreciprocity in transmission amplitude. This nonreciprocal spin wave propagation, realized in a superconducting-compatible magnonic platform, represents a key step toward unidirectional quantum state transfer via magnetic waveguides [3].

[1] M. Song et al., Nature Communications 16, 3649 (2025)

[2] Y. Li et al., Applied Physics Letters 123, 022406 (2023)

[3] Z. Jiang et al., Applied Physics Letters 123, 130501 (2023)

*Work at Argonne and UIUC was supported by the U.S. DOE, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division under contract No. DE-SC0022060. Use of the Center for Nanoscale Materials (CNM), an Office of Science user facility, was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract no. DE-AC02-06CH11357. K.-J.K. is supported by KAIST-funded Global Singularity Research Program for 2021 and the National Research Foundation of Korea (NRF) funded by the Korean Government (MSIP) under grant No. 2020R1A2C4001789, 2016R1A5A1008184. M.S. was supported by the education and training program of the Quantum Information Research Support Center, funded through the National research foundation of Korea(NRF) by the Ministry of science and ICT (MSIT) of the Korean government (No.RS-2023-NR057243).

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Presenters

  • Moojune Song

    • KAIST
    • Korea Advanced Institute of Science and Technology (KAIST)

Authors

  • Moojune Song

    • KAIST
    • Korea Advanced Institute of Science and Technology (KAIST)

  • Phuoc Cao Van

    • Chungnam National University

  • Jinho Lim

    • University of Illinois at Urbana-Champaign
    • University of Illinois Urbana-Champaign

  • Jae-Hyeon An

    • Chungnam National University

  • Seung-Jin Yang

    • KAIST

  • Ralu Divan

    • Argonne National Laboratory
    • Center for Nanoscale Materials, Argonne National Laboratory

  • Jong-Ryul Jeong

    • Chungnam National University

  • Axel F Hoffmann

    • University of Illinois at Urbana-Champaign

  • Kab-Jin Kim

    • KAIST
    • Korea Adv Inst of Sci & Tech

  • Valentine Novosad

    • Argonne National Laboratory

  • Yi Li

    • Argonne National Laboratory