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Lyapina, A. A.
Trapped modes in a non-axisymmetric cylindrical waveguide / A. A. Lyapina, A. S. Pilipchuk, A. F. Sadreev // J. Sound Vib. - 2018. - Vol. 421. - P. 48-60, DOI 10.1016/j.jsv.2018.01.056. - Cited References: 52. - This work has been supported by RFBR through Grant 17-02-00440. A.S. acknowledges discussions with E.N. Bulgakov, D.N. Maksimov, H. Schanz, P. Seba, L. Sirko, H.-J. Stöckmann and Shubo Wang. . - ISSN 0022-460X
Кл.слова (ненормированные):
Trapped modes -- Cylindrical non-axisymmetric waveguide -- Waveguide rotation -- Wave faucet
Аннотация: We consider acoustic wave transmission in a non-axisymmetric waveguide which consists of a cylindrical resonator and two cylindrical waveguides whose axes are shifted relatively to each other by an azimuthal angle Δφ . Under variation of the resonator's length and fixed Δφ we find bound states in the continuum (trapped modes) due to full destructive interference of resonant modes leaking into the waveguides. Rotation of the waveguide adds complex phases to the coupling strengths of the resonator eigenmodes with the propagating modes of the waveguides tuning Fano resonances to give rise to a wave faucet. Under variation of Δφ with fixed resonator's length we find symmetry protected trapped modes. For Δφ ≠ 0 these trapped modes contribute to the scattering function supporting high vortical acoustic intensity spinning inside the resonator. The waveguide rotation brings an important feature to the scattering and provides an instrument for control of acoustic transmittance and wave trapping.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Pilipchuk, A. S.; Пилипчук, Артем Сергеевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Ляпина, Алина Андреевна
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Sadreev, A. F.
Tuning of Fano resonances by rotation of continuum: Wave faucet / A. F. Sadreev, A. S. Pilipchuk, A. A. Lyapina // Europhys. Lett. - 2017. - Vol. 117, Is. 5. - Ст. 50011, DOI 10.1209/0295-5075/117/50011. - Cited References:35. - This work has been supported by RFBR through Grant 17-02-00440. The authors thank E. N. Bulgakov and D. N. Maksimov for helpful discussions. . - ISSN 0295-5075. - ISSN 1286-4854

РУБ Physics, Multidisciplinary
Рубрики:
BOUND-STATES
TRAPPED MODES
ACOUSTIC RESONANCES
Аннотация: We consider wave transmission in a non-axisymmetric waveguide which consists of cylindrical resonator and two semi-infinite cylindrical waveguides whose axes are shifted relative to each other by azimuthal angle Δϕ. Although rotation by Δϕ does not change the eigenfrequency spectrum of the resonator, it effectively tunes the Fano resonances and respectively gives rise to an analog of a faucet opening and closing wave flux under rotation. Moreover, under the rotation of the waveguide and variation of the length of resonator, numerous events of the Fano resonance collapse occur to argue for the bound states in the continuum. In the nearest vicinity of the bound states scattering wave function with orbital angular momentum shows phase dislocations with giant vortical acoustic flows around.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Pilipchuk, A. S.; Пилипчук, Артем Сергеевич; Lyapina, A. A.; Ляпина, Алина Андреевна; Садреев, Алмаз Фаттахович; RFBR [17-02-00440]
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Linear polarization rotation by a twisted-nematic Fabry–Pйrot cavity / V. A. Gunyakov [et al.] // Abstracts of 27th International Liquid Crystal Conference (ILCC 2018). - 2018. - Ст. P4-C1-21. - Cited References: 3

Материалы конференции

Доп.точки доступа:
Gunyakov, V. A.; Гуняков, Владимир Алексеевич; Timofeev, I. V.; Тимофеев, Иван Владимирович; Krakhalev, M. N.; Крахалев, Михаил Николаевич; Sutormin, V. S.; Сутормин, Виталий Сергеевич; Lee, W.; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; International Liquid Crystal Conference(27 ; 2018 ; July ; 22-27 ; Kyoto, Japan)
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    Zobov, V. E.
    Sequences of selective rotation operators to engineer interactions for quantum annealing on three qutrits / V. E. Zobov, I. S. Pichkovskiy ; ed.: V. F. Lukichev, K. V. Rudenko // Proc. SPIE. - 2019. - Vol. 11022: International Conference on Micro- and Nano-Electronics 2018. - Ст. UNSP 110222V, DOI 10.1117/12.2521253. - Cited References: 21
   Перевод заглавия: Последовательности селективных операторов поворотов для создания взаимодействий для квантового отжига на трех кутритах

РУБ Nanoscience & Nanotechnology + Optics
Рубрики:
ALGORITHM
Кл.слова (ненормированные):
quantum annealing -- factorization -- qutrit -- selective rotation operators
Аннотация: We have done simulating of factorization the number 15 on three qutrits, represented by the spins S = 1, by quantum annealing. We assume that strong one-spin interaction allow selectively operate on different transitions between levels of the each qutrit. We present a sequence of selective rotation operators to engineer from dipole-dipole interaction a time-dependent effective Hamiltonian necessary for solving the problem. Also we find dependence of fidelity versus different parameters: magnetic field, total annealing time, and duration of time step, when the continuous variation of the Hamiltonian is replaced by a discrete one.

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Держатели документа:
KSC SB RAS, Kirensky Inst Phys, Fed Res Ctr, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660074, Russia.

Доп.точки доступа:
Pichkovskiy, I. S.; Lukichev, V.F. \ed.\; Rudenko, K.V. \ed.\; Зобов, Владимир Евгеньевич; International Conference on Micro- and Nano-Electronics(2018 ; Oct. ; 1-5 ; Zvenigorod, Russia)
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Sadreev, A. F.
Tuning of fano resonance by waveguide rotation: Wave faucet and bound states in the continuum / A. Sadreev, A. S. Pilipchuk, A. A. Pilipchuk // Fano Resonances in Optics and Microwaves: Physics and Applications / ed.: E. Kamenetskii, A. Sadreev, A. Miroshnichenko : Springer, 2018. - Vol. 219. - P. 497-525. - (Springer Series in Optical Sciences ; Vol. 219), DOI 10.1007/978-3-319-99731-5_21. - Cited References: 52. - This work has been supported by RFBR through Grant 17-02-00440. A. S. acknowledges discussions with E. N. Bulgakov, D. N. Maksimov, H. Schanz, P. Seba, L. Sirko, H.-J. Stöckmann and Shubo Wang.
Аннотация: We consider acoustic wave transmission in a non-axisymmetric waveguide composed of a cylindrical resonator of radius R and length L and two cylindrical waveguides of radius rR. The center lines of the waveguides are shifted relative to the center line of the resonator by a distance r0 and relative to each other by an azimuthal angle Δϕ. Under variation of L and fixed Δϕ we find bound states in the continuum (trapped modes) due to full destructive interference of resonant modes leaking into waveguides. Rotation by the angle Δϕ brings complex phases into the coupling strengths of the resonator eigenmodes with propagating modes of the waveguides. As the result interference of neighboring resonances strongly depends on rotation of the waveguide introducing novel way for tuning Fano resonances. In turn rotation of the input waveguide strongly affect the acoustic transmission through the resonator imitating a faucet in wave transmission. Under variation of Δϕ and fixed L we find symmetry protected trapped modes. For Δϕ≠0 these trapped modes contribute to the scattering function supporting high vortical acoustic intensity spinning inside the resonator.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Kamenetskii, E. \ed.\; Sadreev, A. F. \ed.\; Садреев, Алмаз Фаттахович; Miroshnichenko, A. \ed.\; Pilipchuk, A. S.; Пилипчук, Артем Сергеевич; Pilipchuk, A. A.; Пилипчук, Алина Андреевна
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Edelman, I.
Oxide glasses with magnetic nanoparticles: transparent magnets (Faraday rotation and electron magnetic resonance studies) / I. . Edelman, J. . Kliava // Phys. Status Solidi B. - 2009. - Vol. 246, Is. 10. - P. 2216-2231, DOI 10.1002/pssb.200945169. - Cited References: 87. - This work is supported in part by RFBR-CNRS joint project, grant No 07-02-92174. We are grateful to E. Petrakovskaja and O. Ivanova for measuring and discussing, respectively, the EMR spectra in thermally treated samples and the FR spectral and magnetic field dependences. . - ISSN 0370-1972

РУБ Physics, Condensed Matter
Рубрики:
SPIN-HAMILTONIAN PARAMETERS
   SINGLE-DOMAIN PARTICLES
   SUPERPARAMAGNETIC RESONANCE
   CRYSTALLIZATION BEHAVIOR
   FERRIMAGNETIC RESONANCE
   PARAMAGNETIC-RESONANCE
   TEMPERATURE-DEPENDENCE
   COMPUTER-SIMULATIONS
   FINE PARTICLES
   BORATE GLASSES
Аннотация: In the first part of this paper we outline the state of the art in the field of magnetic nanoparticles in oxide glasses. We describe the theoretical background of two complementary techniques used for the studies of the state of paramagnetic ions, clusters and magnetic particles in a diamagnetic matrix, viz., magnetooptical Faraday rotation (FR) and electron magnetic resonance (EMIR) and we overview previous results obtained with these techniques for several glass systems. In the second part, we highlight the case of potassium-alumina-borate glasses - a glassy system where doping with paramagnetic oxides results in formation of magnetic particles at very low contents of paramagnetic additions: Fe(2)O(3) and MnO. In the special case when the ratio of the iron and manganese oxides in the charge is 3/2, magnetic nanoparticles with characteristics close to those of manganese ferrite are formed already at the first stage of the glass preparation. After thermal treatment all glasses show FR and EMR spectra attesting to the presence of superparamagnetic nanoparticles, characterized by relatively broad size and shape distributions. The formation of magnetic nanoparticles confers to these glasses magnetic and magnetooptical properties typical of magnetically ordered substances. At the same time, the glasses remain transparent in a part of the visible and near infrared spectral range and display a high FR value. Such properties make them particularly interesting for use as new media for various magneto-optical devices. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

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Держатели документа:
[Edelman, Irina] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Kliava, Janis] Univ Bordeaux 1, Ctr Phys Mol Opt & Hertzienne, CNRS, UMR 5798, F-33405 Talence, France
ИФ СО РАН
L.V. Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 38, 660036 Krasnoyarsk, Russian Federation
Centre de Physique Moleculaire Optique et Hertzienne, Universite Bordeaux1-CNRS, UMR 5798, 351 cours de la Liberation, 33405 Talence cedex, France

Доп.точки доступа:
Kliava, J.; RFBR-CNRS [07-02-92174]
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Dispersion of Faraday rotation in Co/SiO2 multilayer films / I. S. Edelman [et al.] // JETP Letters. - 1996. - Vol. 63, Is. 4. - P. 273-277, DOI 10.1134/1.567015. - Cited References: 9 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
PARTICLES
Аннотация: The Faraday rotation spectra of Co/SiO2 multilayer films were found to be substantially different from the well-known spectra of homogeneous Co films. The character of these changes was studied as a function of the thicknesses of the ferromagnetic metal and the nonmagnetic dielectric layers. (C) 1996 American Institute of Physics.

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Держатели документа:
L. V. Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, 660036 Krasnoyarsk, Russian Federation
ИФ СО РАН

Доп.точки доступа:
Edelman, I. S.; Эдельман, Ирина Самсоновна; Morozova, T. P.; Zabluda, V. M.; Kim, T. A.; Turpanov, I. A.; Турпанов, Игорь Александрович; Betenkova, A. Ya.; Бетенькова, Анна Яковлевна; Dynnik, Y. A.
}
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Zobov, V. E.
Selective control of the states of multilevel quantum systems using nonselective rotation operators / V. E. Zobov, V. P. Shauro // J. Exp. Theor. Phys. - 2009. - Vol. 108, Is. 1. - P. 5-17, DOI 10.1134/S1063776109010026. - Cited References: 20 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
FOURIER-TRANSFORM
SPIN
Кл.слова (ненормированные):
Quantum electronics -- Quantum optics -- Quadrupole nucleus -- Quantum systems -- Radio frequencies -- RF fields -- Rf pulse -- Selective controls -- Selective pulse -- Rotation
Аннотация: We have calculated the sequences of nonselective rotation operators separated by intervals of free evolution that perform selective rotations between adjacent levels in systems with three, four, five, and six nonequidistant levels. We have numerically simulated the realization of the calculated sequences for quadrupole nuclei with corresponding spins controlled by intense nonselective radio-frequency (RF) pulses and investigated the dependences of the realization error on the parameters of external and internal interactions. To reduce the error when the RF field is not strong enough, we have found composite nonselective RF pulses consisting of five simple ones. We show that the error of the composite selective rotation operator can be reduced signifi- cantly in comparison to the error of a simple single selective pulse.

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Держатели документа:
[Zobov, V. E.] Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
[Shauro, V. P.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
ИФ СО РАН
Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Shauro, V. P.; Шауро, Виталий Павлович; Зобов, Владимир Евгеньевич
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Magnetooptical properties of amorphous Co–P thin films / V. V. Sokolov [et al.] // VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016) : abstracts / ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk : KIP RAS SB, 2016. - Ст. P6.4. - P. 312 . - ISBN 978-5-904603-06-9
Кл.слова (ненормированные):
Co-P thin films -- magnetic circular dichroism -- Faraday rotation

Доп.точки доступа:
Sokolov, V. V.; Соколов, Валерий Владимирович; Tabakaeva, K. V.; Табакаева К. В.; Burkova, L. V.; Буркова, Людмила Викторовна; Chzhan, A.V.; Чжан, Анатолий Владимирович; Patrin, G. S.; Патрин, Геннадий Семёнович; Euro-Asian Symposium "Trends in MAGnetism"(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); "Trends in MAGnetism", Euro-Asian Symposium(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); Институт физики им. Л.В. Киренского Сибирского отделения РАН

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10.

Faraday-effect in MBE-grown magnetic multilayered Fe/Cu films / S. G. Ovchinnikov [и др.] // Fiz. Tverd. Tela. - 1993. - Vol. 35, Is. 3. - P. 602-605. - Cited References: 9 . - ISSN 0367-3294

РУБ Physics, Condensed Matter
Рубрики:
KERR ROTATION
ENHANCEMENT

WOS

Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Kononov, V. P.; Кононов, Владимир Павлович; Popel, V. M.; Попёл, Виктор Михайлович; Khudyakov, A. E.; Худяков, Алексей Евгеньевич; Vasilyeva, E. P.; Васильева Е. П.; Zabluda, V. N.; Заблуда, Владимир Николаевич; Edelman, I. S.; Эдельман, Ирина Самсоновна; Staroverova, I. V.; Староверова, Ирина Валерьевна; Blekher, B. E.; Parshin, A. S.; Паршин, Анатолий Сергеевич
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