D. F. Kornovan
Saint Petersburg State University of Information Technologies, Mechanics and Optics
Polarization (waves)Spontaneous emissionLight scatteringPhysicsDielectricNanoparticleDipoleExcited stateAtomAtomic physicsField (physics)Materials scienceCondensed matter physicsNanophotonicsWaveguide (optics)Plane waveMolecular physicsMultipole expansionQuantum mechanicsGround stateExcitationQuantumAnisotropy
24Publications
7H-index
131Citations
Publications 23
Newest
#1Nikita Ustimenko (Saint Petersburg State University of Information Technologies, Mechanics and Optics)
#2Kseniia V. Baryshnikova (Saint Petersburg State University of Information Technologies, Mechanics and Optics)H-Index: 15
Last. Andrey B. Evlyukhin (Leibniz University of Hanover)H-Index: 38
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We investigate the applicability of the coupled multipole model and its modification in the framework of the zero-order Born approximation for modeling of light focusing by finite-size nanostructures of silicon nanospheres, supporting electric and magnetic dipole and quadrupole resonances. The results based on the analytical approximations are verified by comparison with the numerical simulations performed by the T-matrix method. Using the evolutionary algorithm optimization, we apply the develo...
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#1Nikita Ustimenko (Saint Petersburg State University of Information Technologies, Mechanics and Optics)
#2D. F. KornovanH-Index: 7
Last. Mihail I. PetrovH-Index: 22
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Exciting optical effects such as polarization control, imaging, and holography were demonstrated at the nanoscale using the complex and irregular structures of nanoparticles with the multipole Mie-resonances in the optical range. The optical response of such particles can be simulated either by full wave numerical simulations or by the widely used analytical coupled multipole method (CMM), however, an analytical solution in the framework of CMM can be obtained only in a limited number of cases. ...
#1Roman S. Savelev (Saint Petersburg State University of Information Technologies, Mechanics and Optics)H-Index: 12
#2D. F. Kornovan (Saint Petersburg State University of Information Technologies, Mechanics and Optics)H-Index: 7
Last. Mihail I. Petrov (Saint Petersburg State University of Information Technologies, Mechanics and Optics)H-Index: 22
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We report on the formation of high-Q localized states in finite arrays of Mie resonators overcoming the previously predicted values by at least two-orders of magnitude, which becomes possible due to destructive interference of band-edge modes.
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#1Nikita Ustimenko (Saint Petersburg State University of Information Technologies, Mechanics and Optics)
Last. Andrey B. EvlyukhinH-Index: 38
view all 7 authors...
We investigate theoretically and numerically the light focusing by finite-size silicon nanostructures. The structural element is a sphere supporting dipole and quadrupole resonances of both electric and magnetic types. Our analytical model is based on the coupled multipole model (CMM) when the optical response of every particle in the structure is associated with the excitation of its multipole moments generating the secondary (scattered) waves in the system. Since the focusing effect is reached...
In this paper we studied a one-dimensional array of quantum emitters asymmetrically coupled due to chiral interaction through a waveguiding mode. We have showed that disorder and coupling asymmetry compete with each other in forming and destroying Anderson localized states. We found that for wide range of the disorder strength there exists certain asymmetry parameter, which destroys the localization of the states. We have also numerically obtained the dependence of the critical asymmetry strengt...
2 Citations
#1G. FedorovichH-Index: 1
#2D. F. KornovanH-Index: 7
Last. Mihail I. PetrovH-Index: 22
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In this paper we studied an one-dimensional array of atoms coupled to a single-mode waveguide. The formation of polaritonic states is considered in infinite system with and without account for chiral interactions. The effect of diagonal disorder was studied numerically in a finite atomic array. We showed that in the presence of disorder localized states were observed in a symmetrically coupled atoms along with delocalized states. With increase of the degree of directionality the delocalized stat...
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Last. Andrey B. EvlyukhinH-Index: 38
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The Born series method is a classical approach to describe the properties of various physical systems. Despite the tremendous advantage of this approach which leads to save the time of complicated systems simulation, it has an assumption in the origin about a small value that can be treated as a decomposition parameter. This fact brings strong limitations on the use of this approach for studying optical systems, especially resonant ones. In this paper, it is observed how the Born series method c...
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#1D. F. KornovanH-Index: 7
#2Roman S. SavelevH-Index: 12
Last. Mihail I. PetrovH-Index: 22
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We introduce a novel physical mechanism for achieving giant quality factors (Qfactors) in finite-length periodic arrays of subwavelength optical resonators. The underlying physics is based on interference between the band-edge mode and another standing mode in the array, and the formation of spatially localized states with dramatically suppressed radiative losses. We demonstrate this concept for an array of Ndipoles with simultaneous cancellation of multipoles up to Nth order and the $Q...
#1D. F. KornovanH-Index: 7
Last. Mihail I. PetrovH-Index: 22
view all 3 authors...
2 CitationsSource
#1Ivan ToftulH-Index: 4
#2D. F. KornovanH-Index: 7
Last. Mihail I. PetrovH-Index: 22
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In this paper, we study a stable optomechanical system based on a nanoparticle chain coupled to a waveguide mode. Under the plane wave excitation the nanoparticles form a stable self-organized periodic chain array along the direction of the waveguide through the transverse binding effect. We show that owing to the long-range interaction between the nanoparticles the trapping potential for each nanoparticle in the chain increases linearly with the system size making the formation of long chains m...
8 CitationsSource