Strong Photon-Magnon Coupling Using a Lithographically Defined Organic Ferrimagnet.

Autor: Xu Q; Department of Physics, Cornell University, Ithaca, NY, 14853, USA., Cheung HFH; Department of Physics, Cornell University, Ithaca, NY, 14853, USA., Cormode DS; Department of Physics, The Ohio State University, Columbus, OH, 43210, USA., Puel TO; Department of Physics and Astronomy, University of Iowa, Iowa City, IA, 52242, USA., Pal S; School of Applied and Engineering Physics, Cornell University, Ithaca, NY, 14853, USA., Yusuf H; Department of Physics, The Ohio State University, Columbus, OH, 43210, USA., Chilcote M; School of Applied and Engineering Physics, Cornell University, Ithaca, NY, 14853, USA., Flatté ME; Department of Physics and Astronomy, University of Iowa, Iowa City, IA, 52242, USA., Johnston-Halperin E; Department of Physics, The Ohio State University, Columbus, OH, 43210, USA., Fuchs GD; School of Applied and Engineering Physics, Cornell University, Ithaca, NY, 14853, USA.
Jazyk: angličtina
Zdroj: Advanced science (Weinheim, Baden-Wurttemberg, Germany) [Adv Sci (Weinh)] 2024 Apr; Vol. 11 (14), pp. e2310032. Date of Electronic Publication: 2024 Jan 26.
DOI: 10.1002/advs.202310032
Abstrakt: A cavity-magnonic system composed of a superconducting microwave resonator coupled to a magnon mode hosted by the organic-based ferrimagnet vanadium tetracyanoethylene (V[TCNE] x ) is demonstrated. This work is motivated by the challenge of scalably integrating a low-damping magnetic system with planar superconducting circuits. V[TCNE] x has ultra-low intrinsic damping, can be grown at low processing temperatures on arbitrary substrates, and can be patterned via electron beam lithography. The devices operate in the strong coupling regime, with a cooperativity exceeding 1000 for coupling between the Kittel mode and the resonator mode at T≈0.4 K, suitable for scalable quantum circuit integration. Higher-order magnon modes are also observed with much narrower linewidths than the Kittel mode. This work paves the way for high-cooperativity hybrid quantum devices in which magnonic circuits can be designed and fabricated as easily as electrical wires.
(© 2024 The Authors. Advanced Science published by Wiley‐VCH GmbH.)
Databáze: MEDLINE
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