265 citations · 1.2k across the 38 of their papers we have counts for
37 papers
Exceptional light propagation via generalized bulk-edge correspondence
Heitor da Silva, Sergey K. Ivanov, Isaac Suárez +2
In topological photonics, the bulk-edge correspondence is conventionally imported by direct analogy with electronic systems, overlooking the fundamentally distinct spacetime symmet…
Floquet states on disclinations
K. Sabour, S. K. Ivanov, A. Ferrando +1
We show that periodic longitudinal modulation of waveguide arrays with disclination can result in the appearance of previously unexplored Floquet modes bound to the disclination co…
Observation of linear and nonlinear light trapping on topological dislocations
S. K. Ivanov, A. V. Kireev, K. Sabour +11
Topological dislocations in otherwise periodic lattices represent global structural defects that, nevertheless, typically leave the lattice periodicity intact far from the dislocat…
Bloch-Landau-Zener Oscillations in Moiré Lattices
Sergey K. Ivanov, Yaroslav V. Kartashov, Vladimir V. Konotop
We develop a theory of two-dimensional Bloch-Landau-Zener (BLZ) oscillations of wavepackets in incommensurate moiré lattices under the influence of a weak linear gradient. Unlike p…
Observation of Light Localization at the Edges of Quasicrystal Waveguide Arrays
S. K. Ivanov, S. A. Zhuravitskii, N. S. Kostyuchenko +10
Quasicrystals are unique systems that, unlike periodic structures, lack translational symmetry but exhibit long-range order dramatically enriching the system properties. While evol…
Floquet valley Hall edge solitons
Sergey K. Ivanov, Yaroslav V. Kartashov
We introduce traveling Floquet valley Hall edge solitons in a genuinely continuous system consisting of a waveguide array with a dynamically varying domain wall between two honeyco…
Macroscopic Zeno effect in Su-Schrieffer-Heeger photonic topological insulator
S. K. Ivanov, S. A. Zhuravitskii, N. N. Skryabin +6
The quantum Zeno effect refers to slowing down of the decay of a quantum system that is affected by frequent measurements. Nowadays, the significance of this paradigm is extended f…
-solitons on a ring of waveguides
Sergey K. Ivanov, Yaroslav V. Kartashov
We study the existence and stability of -solitons on a ring of periodically oscillating waveguides. The array is arranged into Su-Schrieffer-Heeger structure placed on a ring, w…
Vortex solitons in moire optical lattices
Sergey K. Ivanov, Vladimir V. Konotop, Yaroslav V. Kartashov +1
We show that optical moire lattices enable the existence of vortex solitons of different types in self-focusing Kerr media. We address the properties of such states both in lattice…
Light bullets in Su-Schrieffer-Heeger photonic topological insulators
Sergey K. Ivanov, Yaroslav V. Kartashov, Lluis Torner
We introduce a different class of thresholdless three-dimensional soliton states that form in higher-order topological insulators based on a two-dimensional Su-Schrieffer-Heeger ar…
Rotating topological edge solitons
Sergey K. Ivanov, Yaroslav V. Kartashov
We address the formation of topological edge solitons in rotating Su-Schrieffer-Heeger waveguide arrays. The linear spectrum of the non-rotating topological array is characterized…
Observation of linear and nonlinear light localization at the edges of moiré lattices
A. A. Arkhipova, Y. V. Kartashov, S. K. Ivanov +11
We observe linear and nonlinear light localization at the edges and in the corners of truncated moiré lattices created by the superposition of periodic mutually-twisted at Pythagor…
Motion of dark solitons in a non-uniform flow of Bose-Einstein condensate
S. K. Ivanov, A. M. Kamchatnov
We study motion of dark solitons in a non-uniform one-dimensional flow of Bose-Einstein condensate. Our approach is based on Hamiltonian mechanics applied to the particle-like beha…
Observation of nonlinearity-controlled switching of topological edge states
A. A. Arkhipova, S. K. Ivanov, S. A. Zhuravitskii +8
We report the experimental observation of the periodic switching of topological edge states between two dimerized fs-laser written waveguide arrays. Switching occurs due to the ove…
Four-wave mixing Floquet topological soliton
Sergey K. Ivanov, Yaroslav V. Kartashov, Vladimir V. Konotop
We consider a topological Floquet insulator realized as a honeycomb array of helical waveguides imprinted in weakly birefringent medium. The system accounts for four-wave mixing oc…
Floquet Edge Multicolor Solitons
Sergey K. Ivanov, Yaroslav V. Kartashov, Alexander Szameit +2
Topological insulators are unique physical structures that are insulators in their bulk, but support currents at their edges which can be unidirectional and topologically protected…
Trigonometric shock waves for the Kaup-Boussinesq system
Sergey K. Ivanov, Anatoly M. Kamchatnov
We consider the modulationally stable version of the Kaup-Boussinesq system which models propagation of nonlinear waves in various physical systems. It is shown that the Whitham mo…
Floquet defect solitons
Sergey K. Ivanov, Yaroslav V. Kartashov, Vladimir V. Konotop
We consider an array of straight nonlinear waveguides constituting a two-dimensional square lattice, with a few central layers tilted with respect to the rest of the structure. It…
Nonlinear second-order photonic topological insulators
Marco S. Kirsch, Yiqi Zhang, Mark Kremer +7
Higher-order topological insulators (HOTI) are a novel topological phase beyond the framework of the conventional bulk-boundary correspondence. In these peculiar systems, the topol…
Topological dipole Floquet solitons
Sergey K. Ivanov, Yaroslav V. Kartashov, Matthias Heinrich +3
We theoretically introduce a new type of topological dipole solitons propagating in a Floquet topological insulator based on a kagome array of helical waveguides. Such solitons bif…
Nonlinearity-induced photonic topological insulator
Lukas J. Maczewsky, Matthias Heinrich, Mark Kremer +8
The hallmark feature of topological insulators renders edge transport virtually impervious to scattering at defects and lattice disorder. In our work, we experimentally demonstrate…
Formation of dispersive shock waves in evolution of a two-temperature collisionless plasma
Sergey K. Ivanov, Anatoly M. Kamchatnov
The nonlinear dynamics of pulses in a two-temperature collisionless plasma with formation of dispersion shock waves is studied. An analytical description is given for arbitrary for…
Plasma slab expansion into vacuum
S. K. Ivanov, A. M. Kamchatnov
The problem of collisionless plasma slab expansion into vacuum is solved within a two-temperature hydrodynamic approximation in the dispersionless limit of zero Debye radius. In th…
Formation of dispersive shock waves in a saturable nonlinear medium
Sergey K. Ivanov, Jules-Elemir Suchorski, Anatoly M. Kamchatnov +2
We use the Gurevich-Pitaevskii approach based on the Whitham averaging method for studying the formation of dispersive shock waves in an intense light pulse propagating through a s…