Registration Number
0223U005793,
(0123U103737)
, R & D reports
Title
Conversion Technologies for Quantum Sensing & Secure Communications
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Чисельний аналіз, моделювання та експериментальна оцінка ефективності квантових гібридних систем НВЧ резонатор – магнітні спині.
Head
Tarapov Serhii I., Доктор фізико-математичних наук
Registration Date
31-12-2023
Organization
O. Ya. Usikov Institute for Radiophysics and Electronics NAS of Ukraine
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Research, development and implementation of quantum technologies (for example, quantum communication networks, quantum key distribution (QKD), quantum random number generation, etc.) in various scientific and industrial fields is realized by solving interdisciplinary applied scientific tasks and the subsequent integration of various technologies into the final product.
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The object of research is the interaction of the electromagnetic field of the microwave range in planar resonant systems with a magnetic sample. The purpose of the work is to determine the influence of the resonators’ parameters (geometry and material properties) and the magnetic field parameters on increasing of the photon-magnon coupling strength between planar resonators and the spin system of the magnetic sample. A modified model of forced oscillations of two oscillators, based on the model of two serially inductively coupled LCR circuits, is proposed to analyze the quality factor of the modes of a planar resonator in the form of a double split-ring (SRR). When placing a film of yttrium iron garnet (YIG) in the region between two resonators, it was numerically obtained that the photon-magnon coupling strength increases at the frequency of the "dark" mode in comparison with the mode observed for a single SRR. The spectra and images of the spatial distribution of the electromagnetic field for the modified inverse SRR were calculated. It is shown that with an increase in the opening angle of the modified inverse SRR, an increase in the strength of the photon-magnon interaction is observed. It was also shown that the modified inverse SRR with the opening angle of 350° demonstrates the maximum value of the photon-magnon coupling strength 150 MHz with the spin-number-normalized coupling strength of 3.2575 Hz.An experimental technique for registering the spatial distribution of electromagnetic field components on the surface of planar resonators using the passive probe method has been developed. An experimental study of the interaction of the magnon mode of the YIG film with the resonant structure based on a planar waveguide with a defect was carried out. It is shown that the photon-magnon coupling strength for the planar waveguide defect with the YIG thin film is 213 MHz at a frequency of 6.0 GHz. The calculated spin-number-normalized coupling strength is 0.15 Hz.
Product Description
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Vakula Artur S.
Oleksii O. Hirich
Nedukh Serhii V.
Sergii Y. Polevoi
Sova Katreyna Yu.
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2023-12-31
