Strong Photon-Magnon Coupling Using a Lithographically Defined Organic Ferrimagnet

Overview

Journal Adv Sci (Weinh)

Specialty Biomedical Engineering

Date 2024 Jan 27

PMID 38279583

Authors

Qin Xu

Hil Fung Harry Cheung

Donley S Cormode

Tharnier O Puel

Srishti Pal

Huma Yusuf

Michael Chilcote

Michael E Flatte

Ezekiel Johnston-Halperin

Gregory D Fuchs

Affiliations

Soon will be listed here.

Abstract

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]) is demonstrated. This work is motivated by the challenge of scalably integrating a low-damping magnetic system with planar superconducting circuits. V[TCNE] 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.

Citing Articles

The role of excitation vector fields and all-polarisation state control in cavity magnonics.

Joseph A, Nair J, Smith M, Holland R, McLellan L, Boventer I Npj Spintron. 2024; 2(1):59.

PMID: 39649491 PMC: 11618086. DOI: 10.1038/s44306-024-00062-z.

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

Xu Q, Cheung H, Cormode D, Puel T, Pal S, Yusuf H Adv Sci (Weinh). 2024; 11(14):e2310032.

PMID: 38279583 PMC: 11005739. DOI: 10.1002/advs.202310032.

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