2.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- V. Konotop2 profiles96 · h 53
- Rui Santos55 · h 38
- P. Ferreira3 profiles39 · h 27
- M. M. Telo da Gama2 profiles33 · h 25
- Y. Kartashov28 · h 54
- D. Zezyulin26 · h 23
- N. Araújo2 profiles22 · h 21
- M. Mühlleitner16 · h 52
- J. M. Tavares14 · h 23
- L. Torner13 · h 65
- M. Tasinkevych2 profiles13 · h 28
- J. P. Silva2 profiles12 · h 30
- University of LisbonPT321 papers
- Instituto Politécnico de LisboaPT99 papers
- Institute of Photonic SciencesES24 papers
- Universidade Federal do CearáBR23 papers
- University of MinhoPT22 papers
- Universitat Politècnica de CatalunyaES21 papers
- ETH ZurichCH20 papers
- Institute of SpectroscopyRU19 papers
- Instituto Superior TécnicoPT19 papers
- Centre National de la Recherche ScientifiqueFR17 papers
- Karlsruhe Institute of TechnologyDE17 papers
- University of AveiroPT16 papers
50 papers · 1 filter
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…
Vector valley Hall edge solitons in superhoneycomb lattices
Qian Tang, Yiqi Zhang, Yaroslav V. Kartashov +2
Topological edge solitons that bifurcate and inherit topological protection from linear edge states and, therefore, demonstrate immunity to disorder and defects upon propagation, a…
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…
Superexponential amplification, power blowup, and solitons sustained by non-Hermitian gauge potentials
Dmitry A. Zezyulin, Yaroslav V. Kartashov, Vladimir V. Konotop
We introduce a continuous one-dimensional non-Hermitian matrix gauge potential and study its effect on dynamics of a two-component field. The model is emulated by a system of evane…
Metastable two-component solitons near an exceptional point
Dmitry A. Zezyulin, Yaroslav V. Kartashov, Vladimir V. Konotop
We consider a two-dimensional nonlinear waveguide with distributed gain and losses. The optical potential describing the system consists of an unperturbed complex potential dependi…
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…
Localization and delocalization of light in photonic moire lattices
Peng Wang, Yuanlin Zheng, Xianfeng Chen +5
Moire lattices consist of two identical periodic structures overlaid with a relative rotation angle. Present even in everyday life, moire lattices have been also produced, e.g., wi…
Vector Topological Edge Solitons in Floquet Insulators
Sergey K. Ivanov, Yaroslav V. Kartashov, Alexander Szameit +2
We introduce topological vector edge solitons in a Floquet insulator, consisting of two honeycomb arrays of helical waveguides with opposite directions of rotation in a focusing no…
Designing lasing and perfectly absorbing potentials
Vladimir V. Konotop, Evgeny Lakshtanov, Boris Vainberg
Existence of a spectral singularity (SS) in the spectrum of {a Schrödinger operator with} a non-Hermitian potential requires exact matching of parameters of the potential. We provi…
Spectral singularities of odd--symmetric potential
Vladimir V. Konotop, Dmitry A. Zezyulin
We describe one-dimensional stationary scattering of a two-component wave field by a non-Hermitian matrix potential which features odd- symmetry, i.e., symmetry with $(PT)^2=-1…
Coherent perfect absorber and laser for nonlinear waves in optical waveguide arrays
Dmitry A. Zezyulin, Herwig Ott, Vladimir V. Konotop
A localized non-Hermitian potential can operate as a coherent perfect absorber or as a laser for nonlinear waves. The effect is illustrated for an array of optical waveguides, with…
Route to chaos in a coupled microresonator system with gain and loss
Krzysztof Zegadlo, Nguyen Viet Hung, Vladimir V. Konotop +2
We consider chaotic dynamics of a system of two coupled ring resonators with a linear gain and a nonlinear absorption. Such a structure can be implemented in various settings inclu…
Odd-time reversal symmetry induced by anti--symmetric medium
Vladimir V. Konotop, Dmitry A. Zezyulin
We introduce an optical system (a coupler) obeying parity-time () symmetry with odd-time reversal, . It is implemented with two birefringent waveguides embedded in an a…
Linear and nonlinear coherent perfect absorbers on simple layers
Vladimir V. Konotop, Dmitry A. Zezyulin
We consider linear and nonlinear coherent perfect absorbers (CPAs) in multidimensional geometries and construct explicitly the respective perfectly absorbed solutions. The multidim…
Bound states in the continuum in a two-dimensional PT-symmetric system
Yaroslav V. Kartashov, Carles Milian, Vladimir V. Konotop +1
We address a two-dimensional parity-time (PT)-symmetric structure built as a chain of waveguides, where all waveguides except for the central one are conservative, while the centra…
Coherent-perfect-absorber and laser for bound states in a continuum
Bikashkali Midya, Vladimir V. Konotop
It is shown that two fundamentally different phenomena, the bound states in continuum and the spectral singularity (or time-reversed spectral singularity), can occur simultaneously…
-symmetric coupler with intermodal dispersion
Dmitry A. Zezyulin, Yaroslav V. Kartashov, Vladimir V. Konotop
A dual-core waveguide with balanced gain and loss in different arms and with intermodal coupling is considered. The system is not invariant under the conventional symmetry but…
Jamming anomaly in -symmetric systems
I. V. Barashenkov, Dmitry A. Zezyulin, Vladimir V. Konotop
The Schrödinger equation with a -symmetric potential is used to model an optical structure consisting of an element with gain coupled to an element with loss. At low…
Two-dimensional solitons in conservative and parity-time-symmetric triple-core waveguides with cubic-quintic nonlinearity
David Feijoo, Dmitry A. Zezyulin, Vladimir V. Konotop
We analyze a system of three two-dimensional nonlinear Schrödinger equations coupled by linear terms and with the cubic-quintic (focusing-defocusing) nonlinearity. We consider two…
Diffraction control in PT-symmetric photonic lattices: from beam rectification to dynamic localization
Yaroslav V. Kartashov, Victor A. Vysloukh, Vladimir V. Konotop +1
We address the propagation of light beams in longitudinally modulated PT-symmetric lattices, built as arrays of couplers with periodically varying separation between their channels…
Suppression and restoration of disorder-induced light localization mediated by PT-symmetry breaking
Yaroslav V. Kartashov, Chao Hang, Vladimir V. Konotop +3
We uncover that the breaking point of the PT-symmetry in optical waveguide arrays has a dramatic impact on light localization induced by the off-diagonal disorder. Specifically, wh…
Topological states in partially-PT-symmetric azimuthal potentials
Yaroslav V. Kartashov, Vladimir V. Konotop, Lluis Torner
We introduce partially-parity-time-symmetric (pPT-symmetric) azimuthal potentials composed from individual PT-symmetric cells located on a ring, where two azimuthal directions are…
Dark solitons in dual-core waveguides with dispersive coupling
Yaroslav V. Kartashov, Vladimir V. Konotop, Boris A. Malomed
We report on new types of two-component one-dimensional dark solitons (DSs) in a model of a dual-core waveguide with normal group-velocity dispersion and Kerr nonlinearity in both…
Stabilization of spatiotemporal solitons in Kerr media by dispersive coupling
Yaroslav V. Kartashov, Boris A. Malomed, Vladimir V. Konotop +2
We introduce a mechanism to stabilize spatiotemporal solitons in Kerr nonlinear media, based on the dispersion of linear coupling between the field components forming the soliton s…