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Coupling of space-separated oscillators is interesting for quantum and communication technologies. In this work, it is shown that two antiferromagnetic oscillators placed inside an electromagnetic cavity couple cooperatively to its…

Mesoscale and Nanoscale Physics · Physics 2023-06-06 M. Białek , W. Knap , J. -Ph. Ansermet

Currently, there is a growing interest in studying the coherent interaction between magnetic systems and electromagnetic radiation in a cavity, prompted partly by possible applications in hybrid quantum systems. We propose a multimode…

Mesoscale and Nanoscale Physics · Physics 2020-05-13 T. S. Parvini , V. A. S. V. Bittencourt , Silvia Viola Kusminskiy

We study the nonreciprocal transmission and the fast-slow light effects in a cavity optomechanical system, in which the cavity supports a clockwise and a counter-clockwise circulating optical modes, both the two modes are driven…

Quantum Physics · Physics 2019-06-26 Jun-Hao Liu , Ya-Fei Yu , Zhi-Ming Zhang

Nonreciprocal devices, allowing to manipulate one-way signals, are crucial to quantum information processing and quantum network. Here we propose a nonlinear cavity-magnon system, consisting of a microwave cavity coupled to one or two…

Quantum Physics · Physics 2024-11-14 Xiao-Hong Fan , Yi-Ning Zhang , Jun-Po Yu , Ming-Yue Liu , Wen-Di He , Hai-Chao Li , Wei Xiong

Magnons, namely spin waves, are collective spin excitations in ferromagnets, and their control through coupling with other excitations is a key technology for future hybrid spintronic devices. Although strong coupling has been demonstrated…

Mesoscale and Nanoscale Physics · Physics 2022-03-18 D. Hatanaka , M. Asano , H. Okamoto , Y. Kunihashi , H. Sanada , H. Yamaguchi

Microwave cavities with high quality factors enable coherent coupling of distant quantum systems. Virtual photons lead to a transverse exchange interaction between qubits, when they are non-resonant with the cavity but resonant with each…

Quantum Physics · Physics 2011-06-24 S. Filipp , M. Göppl , J. M. Fink , M. Baur , R. Bianchetti , L. Steffen , A. Wallraff

We demonstrate nonreciprocal control of the speed of light by sending a microwave pulse through a cavity magnonics device. In contrast to reciprocal group velocity controlled by conventional electromagnetically induced transparency (EIT)…

Optics · Physics 2025-02-18 Jiguang Yao , Chenyang Lu , Xiaolong Fan , Desheng Xue , Greg E. Bridges , C. -M. Hu

Cavity-magnon systems, combining magnons and photons, offer a versatile platform for studying quantum entanglement and advancing quantum information science. In this work, we propose a scheme for generating nonreciprocal magnon-magnon…

Quantum Physics · Physics 2026-05-15 Zhisheng Xu , Mengxue Li , Chunfang Sun , Gangcheng Wang

We propose a procedure for the significant enhancement of the strong coupling rate between photons in an optical cavity and a single quantum emitter, such as an atom, quantum dot or trapped ion. We show that specially designed,…

Optics · Physics 2021-10-13 Denis V. Karpov , Peter Horak

On-chip cavity magnomechanics is an emerging field exploring acoustic and magnonic functionalities of various ferromagnetic materials and structures using strongly confined phonons. It is expected that such cavity magnomechanics can be…

Mesoscale and Nanoscale Physics · Physics 2023-10-25 Motoki Asano , Hiroki Matsumoto , Masamitsu Hayashi , Daiki Hatanaka

Evidence of non-hermitian behavior has been recently demonstrated in cavity magnonics, including the emergence of mode level attraction and exceptional points in spectroscopic measurements. This work demonstrates experimental evidence of…

Quantum Physics · Physics 2025-12-05 Alban Joseph , Mawgan A. Smith , Martin P. Weides , Rair Macêdo

Incorporating cavity magnonics has opened up a new avenue in controlling non-reciprocity. This work examines a yttrium iron garnet sphere coupled to a planar microwave cavity at milli-Kelvin temperature. Non-reciprocal device behavior…

Applied Physics · Physics 2023-03-09 Mun Kim , Armin Tabesh , Tyler Zegray , Shabir Barzanjeh , Can-Ming Hu

We report on the electrical detection of a hybrid magnon-photon system, which is comprised of a magnetic sample coupled to a planar cavity. While the uniform Kittel mode has the largest coupling strength among all the magnon modes, it only…

Mesoscale and Nanoscale Physics · Physics 2020-08-05 Peng-Chao Xu , J. W. Rao , Y. Wang , Y. S. Gui , John Q. Xiao , Xiaofeng Jin , C. -M. Hu

Cavity Magnonics is an emerging field that studies the strong coupling between cavity photons and collective spin excitations such as magnons. This rapidly developing field connects some of the most exciting branches of modern physics, such…

Quantum Physics · Physics 2020-05-04 Yi-Pu Wang , Can-Ming Hu

The fields of cavity quantum electrodynamics and magnetism have recently merged into \textit{`cavity spintronics'}, investigating a quasiparticle that emerges from the strong coupling between standing electromagnetic waves confined in a…

One of the most fundamental forms of magnon-phonon interaction is an intrinsic property of magnetic materials, the "magnetoelastic coupling". This particular form of interaction has been the basis for describing magnetic materials and their…

We formulate a scattering theory to study magnetic films in microwave cavities beyond the independent-spin and rotating wave approximations of the Tavis-Cummings model. We demonstrate that strong coupling can be realized not only for the…

Mesoscale and Nanoscale Physics · Physics 2015-03-26 Yunshan Cao , Peng Yan , Hans Huebl , Sebastian T. B. Goennenwein , Gerrit E. W. Bauer

We show strong coupling between antiferromagnetic magnons and microwave cavity photons at both high and externally controllable magnon frequencies. Using the fully quantum mechanical path-integral method, we study an antiferromagnetic…

Mesoscale and Nanoscale Physics · Physics 2025-09-03 Henrik T. Kaarbø , Henning G. Hugdal , Sol H. Jacobsen

Cavity magnonics, which studies the interaction of light with magnetic systems in a cavity, is a promising platform for quantum transducers and quantum memories. At microwave frequencies, the coupling between a cavity photon and a magnon,…

Magnons are quantized collective spin-wave excitations in magnetically ordered materials. Revealing their interactions among these collective modes is crucial for the understanding of fundamental many-body effects in such systems and the…