Magnon-driven dynamics of a hybrid system excited with ultrafast optical pulses

Crescini, N.; Braggio, C.; Carugno, G.; Vora, R. Di; Ortolan, A.; Ruoso, G.

doi:10.1038/s42005-020-00435-w

Cited by 20 publications

(9 citation statements)

References 77 publications

(84 reference statements)

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“…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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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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“…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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“…where t ac is a frequency dependent coefficient that takes into account that the axion-deposited power is not uniform in the haloscope operation range, as is discussed in [115]. All the experimental parameters used to extract the limits are measured within every run, making the measurement highly self-consistent.…”

Section: Data Acquisition and Analysismentioning

confidence: 99%

Building instructions for a ferromagnetic axion haloscope

Crescini¹

2022

Preprint

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A ferromagnetic haloscope is a rf spin-magnetometer used for searching Dark Matter in the form of axions. A magnetic material is monitored searching for anomalous magnetization oscillations which can be induced by dark matter axions. To properly devise such instrument one first needs to understand the features of the searched-for signal, namely the effective rf field of dark matter axions Ba acting on electronic spins. Once the properties of Ba are defined, the design and test of the apparatus may start. The optimal sample is a narrow linewidth and high spin-density material such as Yttrium Iron Garnet (YIG), coupled to a microwave cavity with almost matched linewidth to collect the signal. The power in the resonator is collected with an antenna and amplified with a Josephson Parametric amplifier, a quantum-limited device which, however, adds most of the setup noise. The signal is further amplified with low noise HEMT and down-converted for storage with an heterodyne receiver. This work describes how to build such apparatus, with all the experimental details, the main issues one might face, and some solutions.

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“…Since the working band of the two magnetometers is controlled by the dynamics of CMPs, the latter was studied in a separate work. 72 In conclusion, we described and operated two different types of CMP-based magnetometers, which show an outstanding magnetic sensitivity. The TSM is a device that benefits from its scalability, which lowers the minimum detectable magnetization oscillations.…”

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confidence: 97%

Cavity magnon polariton based precision magnetometry

Crescini

Braggio

Carugno

et al. 2020

Applied Physics Letters

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A photon-magnon hybrid system can be realized by coupling the electron spin resonance of a magnetic material to a microwave cavity mode. The quasiparticles associated with the system dynamics are the cavity magnon polaritons, which arise from the mixing of strongly coupled magnons and photons. We illustrate how these particles can be used to probe the magnetization of a sample with a remarkable sensitivity, devising suitable spin-magnetometers, which ultimately can be used to directly assess oscillating magnetic fields. Specifically, the capability of cavity magnon polaritons of converting magnetic excitations to electromagnetic ones allows for translating to magnetism the quantum-limited sensitivity achieved by state-of-the-art microwave detectors. Here, we employ hybrid systems composed of microwave cavities and ferrimagnetic spheres to experimentally implement two types of novel spin-magnetometers.

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Magnon-driven dynamics of a hybrid system excited with ultrafast optical pulses

Cited by 20 publications

References 77 publications

Advances in Magnetics Roadmap on Spin-Wave Computing

Advances in Magnetics Roadmap on Spin-Wave Computing

Building instructions for a ferromagnetic axion haloscope

Cavity magnon polariton based precision magnetometry

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