Introducing coherent time control to cavity magnon-polariton modes

Wolz, Tim; Stehli, Alexander; Schneider, Andre; Boventer, Isabella; Macêdo, Rair; Ustinov, A. V.; Kläui, Mathias; Weides, Martin

doi:10.1038/s42005-019-0266-x

Cited by 34 publications

(25 citation statements)

References 47 publications

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“…Moreover, the temporal behavior of magnon-photon systems will also be of key for any quantum applications. This has also been investigated, and the time-dependent control of the coupling has been achieved in [451]. Finally, theoretical understanding of such coupling, developed in [439], has allowed predicting the strength of coupling using a perturbation approach.…”

Section: B Yig-based Quantum Magnonicsmentioning

confidence: 99%

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Advances in Magnetics Roadmap on Spin-Wave Computing

et al. 2022

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Magnonics addresses the physical properties of spin waves and utilizes them for data processing. Scalability down to atomic dimensions, operation in the GHz-to-THz frequency range, utilization of nonlinear and nonreciprocal phenomena, and compatibility with CMOS are just a few of many advantages offered by magnons. Although magnonics is still primarily positioned in the academic domain, the scientific and technological challenges of the field are being extensively investigated, and many proof-of-concept prototypes have already been realized in laboratories. This roadmap is a product of the collective work of many authors that covers versatile spin-wave computing approaches, conceptual building blocks, and underlying physical phenomena. In particular, the roadmap discusses the computation operations with Boolean digital data, unconventional approaches like neuromorphic computing, and the progress towards magnon-based quantum computing. The article is organized as a collection of sub-sections grouped into seven large thematic sections. Each sub-section is prepared by one or a group of authors and concludes with a brief description of current challenges and the outlook of further development for each research direction.

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Section: B Yig-based Quantum Magnonicsmentioning

confidence: 99%

“…In addition, magnon states can be directly manipulated by microwave [451] or optical signals [505]. Moreover, specific properties of the resonator also affect the system dynamics.…”

Section: Manipulating Hybrid Magnonic Interactionsmentioning

confidence: 99%

Advances in Magnetics Roadmap on Spin-Wave Computing

et al. 2022

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“…Mechanisms to control the coupling strength have so far included changing the position of the sample within the resonator [16], voltage induced control [17], as well as varying the tem-perature of the system [18]. More recently, a two-port cavity approach has been implemented using two- [19,20] and three-dimensional [21,22] systems as a way to achieve level attraction as well as coherent manipulation of energy exchange in the time domain [23]. These are only a few examples of the intensifying interests to fully understand and manipulate the coupling behaviour in hybrid cavity spintronic systems.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Approach to Cavity Spintronics

et al. 2021

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The fields of cavity quantum electrodynamics and magnetism have recently merged into 'cavity spintronics', investigating a quasiparticle that emerges from the strong coupling between standing electromagnetic waves confined in a microwave cavity resonator and the quanta of spin waves, magnons. This phenomenon is now expected to be employed in a variety of devices for applications ranging from quantum communication to dark matter detection. To be successful, most of these applications require a vast control of the coupling strength, resulting in intensive e↵orts to understanding coupling by a variety of di↵erent approaches. Here, the electromagnetic properties of both resonator and magnetic samples are investigated to provide a comprehensive understanding of the coupling between these two systems. Because the coupling is a consequence of the excitation vector fields, which directly interact with magnetisation dynamics, a highly-accurate electromagnetic perturbation theory is employed which predicts the resonant hybrid mode frequencies for any field configuration within the cavity resonator. The coupling is shown to be strongly dependent not only on the excitation vector fields and sample's magnetic properties but also on the sample's shape. These findings are illustrated by applying the theoretical framework to two distinct experiments: a magnetic sphere placed in a three-dimensional resonator, and a rectangular, magnetic prism placed on a two-dimensional resonator. The theory provides comprehensive understanding of the overall behaviour of strongly coupled systems and it can be easily modified for a variety of other systems.

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“…For example, it has been utilized to develop gradient memory [24] and logic device [25], to manipulate spin current [26], and to generate quantum entanglement [27][28][29][30][31], etc. Coherent control of the dynamics of cavity magnon-polariton has also been experimentally demonstrated [32,33], which paves the way to realize universal information processing.…”

mentioning

confidence: 96%

“…We assume that only the Kittel mode of the magnet is excited by the magnetic component of the microwave field. The cavity can be excited by an external microwave source, either discrete pulse [6,33,44] or continuous wave [4][5][6][7][8][9]. The Hamiltonian describing the dynamics of the cavity magnon-polariton system is written as [6,27]…”

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confidence: 99%

Driven-dissipative Quantum Dynamics in Cavity Magnon-Polariton System

Zhao,

Wang,

Qian

2021

Preprint

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The dynamics of arbitrary-order quantum correlations in the cavity magnon-polariton system is investigated based on quantum master equation in the coherent state representation. The obtained average cavity-photon number agrees well with existing experimental observations. It is found that the second-order quantum coherence for cavity-photon and magnon can be systematically tuned by the external driving microwave and thermal bath. It reveals a competing nature of the quantum coherence with thermal noise effect on the two bosonic fields, as well as the role of cavity magnon-polariton in second-order quantum coherence. Our results demonstrate the rich higher-order quantum dynamics induced by the magnetic light-matter interaction, and serve as the necessary step towards exploring nonclassical states for cavity-photon and magnon in this hybrid quantum system.

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Introducing coherent time control to cavity magnon-polariton modes

Cited by 34 publications

References 47 publications

Advances in Magnetics Roadmap on Spin-Wave Computing

Advances in Magnetics Roadmap on Spin-Wave Computing

Electromagnetic Approach to Cavity Spintronics

Driven-dissipative Quantum Dynamics in Cavity Magnon-Polariton System

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