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Bulgakov, E. N.
Evolution of the resonances of two parallel dielectric cylinders with distance between them / E. N. Bulgakov, K. N. Pichugin, A. F. Sadreev // Phys. Rev. A. - 2019. - Vol. 100, Is. 4. - Ст. 043806, DOI 10.1103/PhysRevA.100.043806. - Cited References: 37. - We acknowledge discussions with D. N. Maksimov. This work was partially supported by Ministry of Education and Science of Russian Federation (State Contract No. 3.1845.2017) and The Russian Foundation for Basic research RFBR Grant No. 19-02-00055. . - ISSN 2469-9926. - ISSN 2469-9934

РУБ Optics + Physics, Atomic, Molecular & Chemical
Рубрики:
WHISPERING-GALLERY MODES
MULTIPLE-SCATTERING
FACTOR ENHANCEMENT
Аннотация: We study evolution of resonant modes by traversing over the distance between two parallel dielectric cylinders. The processes of mutual scattering of Mie resonant modes by cylinders result in an interaction between the cylinders which lifts a degeneracy of resonances of the isolated cylinders. There are two basic scenarios of evolution. For strong interaction of cylinders resonances bypass the Mie resonances with increase of the distance. That scenario is typical for low-lying resonances (monopole and dipole). For weak interaction of cylinders the resonances are bound around the Mie resonances of isolated cylinders that form the second scenario. Both scenarios demonstrate a significant enhancement of the Q factor compared to the case of an isolated cylinder.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Fed Res Ctr KSC, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia.

Доп.точки доступа:
Pichugin, K. N.; Пичугин, Константин Николаевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич; Ministry of Education and Science of Russian FederationMinistry of Education and Science, Russian Federation [3.1845.2017]; Russian Foundation for Basic research RFBRRussian Foundation for Basic Research (RFBR) [19-02-00055]
}
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Pichugin, K. N.
Interaction between coaxial dielectric disks enhances the Q factor / K. N. Pichugin, A. F. Sadreev // J. Appl. Phys. - 2019. - Vol. 126, Is. 9. - Ст. 093105, DOI 10.1063/1.5094188. - Cited References: 32. - We are grateful to A. A. Bogdanov, E. N. Bulgakov, and D. N. Maksimov for numerous and fruitful discussions. This work was supported by the Russian Federation for Basic Research (RFBR) (Grant No. 19-02-00055) and Ministry of Education and Science of Russian Federation (State Contract No. 3.1845.2017). . - ISSN 0021-8979. - ISSN 1089-7550

РУБ Physics, Applied
Рубрики:
WHISPERING-GALLERY MODES
QUALITY-FACTOR
Аннотация: We study the behavior of resonant modes under variation of the distance between two coaxial dielectric disks and show an avoided crossing of resonances because of the interaction between the disks. Owing to coaxial arrangement of disks, the resonant modes are specified by the azimuthal index m = 0,1,2, ... . In the present paper, we consider the case m = 0. At a long enough distance, the modes are symmetric and antisymmetric hybridizations of the resonant modes of the isolated disk. With decreasing the distance, the interaction becomes stronger, giving rise to avoided crossings of different resonances of the isolated disk. This in turn enhances the Q factor of the two disks by one order in magnitude compared to the Q factor of the isolated disk.

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Держатели документа:
RAS, Fed Res Ctr KSC, Kirensky Inst Phys, SB, Krasnoyarsk 660036, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia.

Доп.точки доступа:
Sadreev, A. F.; Садреев, Алмаз Фаттахович; Пичугин, Константин Николаевич; Russian Federation for Basic Research (RFBR)Russian Foundation for Basic Research (RFBR) [19-02-00055]; Ministry of Education and Science of Russian FederationMinistry of Education and Science, Russian Federation [3.1845.2017]
}
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Pichugin, K. N.
Goos-Hanchen and Imbert-Fedorov shifts of higher-order Laguerre-Gaussian beams reflected from a dielectric slab / K. N. Pichugin, D. N. Maksimov, A. F. Sadreev // J. Opt. Soc. Am. A. - 2018. - Vol. 35, Is. 8. - P. 1324-1329, DOI 10.1364/JOSAA.35.001324. - Cited References: 42. - Russian Foundation for Basic Research (RFBR) (17-52-45072). . - ISSN 1084-7529. - ISSN 1520-8532

РУБ Optics
Рубрики:
ORBITAL ANGULAR-MOMENTUM
   LIGHT-BEAM
   TRANSVERSE SHIFT
   LASER MODES
Аннотация: We consider reflection of the Laguerre-Gaussian light beams by a dielectric slab. In view of the unified operator approach, the higher-order Laguerre-Gaussian beams represent a parametric family with the transverse beam profile given by an arbitrary generating parameter. Relying on the Fourier expansion in the focal plane of the beam, we compute the Goos-Hanchen and the Imbert-Fedorov shifts for light beams with non-zero order and azimuthal index. It is demonstrated that both shifts exhibit resonant behavior as functions of the angle of incidence due to the interference between the waves reflected from the upper and lower interfaces. The centroid shifts strongly depend on the order and azimuthal index of the beam. Most interestingly, it is found that the generating parameter of the higher-order beam families strongly affects the shifts. Thus, reshaping of the incident wavefront with fixed order and azimuthal index changes the linear Goos-Hanchen shift up to one half of the beam radius, both negative and positive.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia.

Доп.точки доступа:
Maksimov, D. N.; Максимов, Дмитрий Николаевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Пичугин, Константин Николаевич; Russian Foundation for Basic Research (RFBR) [17-52-45072]
}
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Bulgakov, E. N.
Giant resonant enhancement of optical binding of dielectric particles / E. N. Bulgakov, K. N. Pichugin, A. F. Sadreev // Phys. Rev. A. - 2020. - Vol. 102, Is. 4. - Ст. 043518, DOI 10.1103/PhysRevA.102.043518. - Cited References: 49. - This work was supported by Russian Foundation for Basic Research Project No. 19-02-00055. A.S. thanks D. Maksimov and E. Sherman for helpful discussions . - ISSN 2469-9926. - ISSN 2469-9934

РУБ Optics + Physics, Atomic, Molecular & Chemical
Рубрики:
FORCE
SPHERES
BEAM
Аннотация: Optical coupling of two identical dielectric particles gives rise to bonding and antibonding resonances. The latter is featured by significant narrowing of the resonant width and strong enhancement of the Q factor for the high-index micron-size particles in subwavelength range. We consider particles shaped as spheres and disks under coaxial illumination of dual incoherent counterpropagating Bessel beams. In the case of spheres we derive analytical expressions for the optical binding (OB) force which decays and displays two periods of oscillations. For close distances the OB force enormously increases in the resonant regime. The case of two coaxial disks is featured by extremal enhancement of the Q factor owing to the twofold variation over the distance between disks and the aspect ratio of each disk compared to the case of two spheres. In that case we demonstrate enhancement of the OB force up to several tens of nanonewtons. We show that the magnitude and sign of the OB force strongly depend on the longitudinal wave vector of the Bessel beams.

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

Доп.точки доступа:
Pichugin, K. N.; Пичугин, Константин Николаевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич; Russian Foundation for Basic Research ProjectRussian Foundation for Basic Research (RFBR) [19-02-00055]
}
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Bulgakov, E. N.
Interaction between dielectric particles enhances the Q factor. / E. N. Bulgakov, K. N. Pichugin, A. F. Sadreev // Journal of Physics: Conference Series. - 2020. - Vol. 1461, Is. 1. - Ст. 012144, DOI 10.1088/1742-6596/1461/1/012144. - Cited References: 22. - This work was supported by Russian Science Foundation through Grant 19-02-00055. A. S. thanks A. Bogdanov for numerous and fruitful discussions
Кл.слова (ненормированные):
Anti-symmetric -- Avoided crossings -- Dielectric particles -- Identical particles -- Individual particles -- Quality factors -- Strong enhancement -- Two particles -- Q factor measurement
Аннотация: We consider resonant modes of two dielectric identical particles which can be classified as symmetric and anti symmetric combinations of the resonant modes of individual particles. We show that an approaching of two particles gives rise to an avoided crossing of resonant poles because of interaction between the disks. That in turn results in strong enhancement of the quality factor factor of two disks compared to isolated disks.

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

Доп.точки доступа:
Pichugin, K. N.; Пичугин, Константин Николаевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич; International Conference on Metamaterials and Nanophotonics(4 ; 2019 ; 15 - 19 July ; St. Petersburg, Russian Federation)
}
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Bulgakov, E. N.
Interaction between dielectric particles enhances the Q-factor / E. Bulgakov, K. Pichugin, A. Sadreev // Adv. Electromagn. - 2019. - Vol. 8, Is. 4. - P. 108-117, DOI 10.7716/aem.v8i4.1292. - Cited References: 36. - We acknowledge discussions with A.A. Bogdanov and D.N. Maksimov. This work was partially supported by RFBR grant 19-02-00055 and Ministry of Education and Science of Russian Federation (state contract N 3.1845.2017/4.6). . - ISSN 2119-0275

РУБ Engineering, Electrical & Electronic
Рубрики:
WHISPERING-GALLERY MODES
MULTIPLE-SCATTERING
STATES
Аннотация: We study behavior of resonant modes with a distance between two dielectric resonators shaped as cylinders and disks. We reveal two basic scenarios of evolution of resonances with the distance between the cylinders. For larger distances and respectively weaker interaction of particles the resonances are bound around the resonances of isolated resonators and evolve by spiral way. For shorter distances and respectively stronger interaction the resonances bypass the isolated resonances. Both scenarios demonstrate considerable enhancement of the Q factor compared to the case of isolated particle.

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Держатели документа:
RAN, Kirensky Inst Phys, Siberian Branch, Fed Res Ctr KSC, Krasnoyarsk 660036, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia.

Доп.точки доступа:
Pichugin, K. N.; Пичугин, Константин Николаевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич; RFBRRussian Foundation for Basic Research (RFBR) [19-02-00055]; Ministry of Education and Science of Russian FederationMinistry of Education and Science, Russian Federation [3.1845.2017/4.6]
}
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Pichugin, K. N.
Irregular Aharonov-Bohm oscillations in finite width rings / K. N. Pichugin, A. F. Sadreev // Zhurnal Eksperimentalnoi Teor. Fiz. - 1996. - Vol. 109, Is. 2. - P. 546-561. - Cited References: 47 . - ISSN 0044-4510

РУБ Physics, Multidisciplinary
Рубрики:
HALF FLUX QUANTA
   EDGE STATES
   MAGNETIC-FIELD
   CIRCULAR BENDS
   WIRES
   TRANSPORT
   MAGNETOTRANSPORT
   RESISTANCE
   FLUCTUATIONS
   CONDUCTANCE

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Доп.точки доступа:
Sadreev, A. F.
}
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Nazmitdinov, R. G.
Spin control in semiconductor quantum wires: Rashba and Dresselhaus interaction / R. G. Nazmitdinov, K. N. Pichugin, M. . Valin-Rodriguez // Phys. Rev. B. - 2009. - Vol. 79, Is. 19. - Ст. 193303, DOI 10.1103/PhysRevB.79.193303. - Cited References: 20. - This work was partly supported by Ministerio de Ciencia e Innovacion (Spain), Grant No. FIS2008-00781/FIS and RFBR under Grants No. 08-02-00118 and No. 09-02-98005 (Russia). . - ISSN 1098-0121

РУБ Physics, Condensed Matter
Рубрики:
MAGNETIC-FIELDS
SPINTRONICS
Кл.слова (ненормированные):
semiconductor quantum wires -- spin polarised transport -- spin-orbit interactions
Аннотация: We show that spin precession in a semiconductor quantum wire, caused by the Rashba and the Dresselhaus interactions (both of arbitrary strengths), can be suppressed by dint of an in-plane magnetic field. Using a condition of the translational invariance in the longitudinal coordinate, we found another type of symmetry, which arises at a particular set of intensity and orientation of the magnetic field and explains this suppression. Based on our findings, we propose a transport experiment to measure the strengths of the Rashba and the Dresselhaus interactions.

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Держатели документа:
[Nazmitdinov, R. G.] Univ Illes Balears, Dept Fis, E-07122 Palma de Mallorca, Spain
[Pichugin, K. N.] LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
[Valin-Rodriguez, M.] Conselleria Educ Cultura, E-07004 Palma de Mallorca, Spain
[Nazmitdinov, R. G.] Joint Inst Nucl Res, Bogoliubov Lab Theoret Phys, Dubna 141980, Russia
ИФ СО РАН
Departament de Fisica, Universitat de les Illes Balears, E-07122 Palma de Mallorca, Spain
Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russian Federation
Kirensky Institute of Physics, Akademgorodok 50/38, 660036 Krasnoyarsk, Russian Federation
Conselleria d'Educacio i Cultura, E-07004 Palma de Mallorca, Spain

Доп.точки доступа:
Pichugin, K. N.; Пичугин, Константин Николаевич; Valin-Rodriguez, M.
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Bound states in the continuum in open Aharonov-Bohm rings / E. N. Bulgakov [et al.] // JETP Letters. - 2006. - Vol. 84, Is. 8. - P. 430-435, DOI 10.1134/S0021364006200057. - Cited References: 33 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
WAVE-GUIDE
   QUANTUM
   TRANSMISSION
   SCATTERING
   BILLIARDS
   ELECTRON
Аннотация: Using the formalism of the effective Hamiltonian, we consider bound states in a continuum (BIC). They are nonhermitian effective Hamiltonian eigenstates that have real eigenvalues. It is shown that BICs are orthogonal to open channels of the leads, i.e., disconnected from the continuum. As a result, BICs can be superposed to a transport solution with an arbitrary coefficient and exist in a propagation band. The one-dimensional Aharonov-Bohm rings that are opened by attaching single-channel leads to them allow exact consideration of BICs. BICs occur at discrete values of the energy and magnetic flux; however, it's realization strongly depends on the way to the BIC point.

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Держатели документа:
Russian Acad Sci, Inst Phys, Krasnoyarsk 660036, Russia
Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
ИФ СО РАН
Institute of Physics, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Max-Planck-Institut fur Physik Komplexer Systeme, D-01187 Dresden, Germany

Доп.точки доступа:
Bulgakov, E. N.; Булгаков, Евгений Николаевич; Pichugin, K. N.; Пичугин, Константин Николаевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Rotter, I.
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10.

Reply to "Comment on 'Thomson rings in a disk' " / A. Puente [et al.] // Phys. Rev. E. - 2017. - Vol. 95, Is. 2. - Ст. 026602, DOI 10.1103/PhysRevE.95.026602. - Cited References:5. - M.C. and K.P. are grateful for the warm hospitality at JINR. This work was supported in part by Bogoliubov-Infeld program of BLTP and Russian Foundation for Basic Research. . - ISSN 2470-0045. - ISSN 2470-0053

РУБ Physics, Fluids & Plasmas + Physics, Mathematical

Аннотация: We demonstrate that our model [Phys. Rev. E 91, 032312 (2015)] serves as a useful tool to trace the evolution of equilibrium configurations of one-component charged particles confined in a disk. Our approach reduces significantly the computational effort inminimizing the energy of equilibrium configurations, and it demonstrates a remarkable agreement with the values provided by molecular-dynamics calculations. We show that the Comment misrepresents our paper and fails to provide plausible arguments against the formation hexagonal structure for n = 200 in molecular-dynamics calculations.

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Держатели документа:
Univ Illes Balears, Dept Fis, E-07122 Palma De Mallorca, Spain.
Joint Inst Nucl Res, Bogoliubov Lab Theoret Phys, Dubna 141980, Russia.
PAN, Inst Nucl Phys, Dept Theory Struct Matter, PL-31342 Krakow, Poland.
Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Puente, A.; Nazmitdinov, R. G.; Cerkaski, M.; Pichugin, K. N.; Пичугин, Константин Николаевич
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