84 citations · 392 across the 25 of their papers we have counts for
19 papers · 1 filter
Thresholdless corner vortex solitons in fractal Sierpiński topological insulators
Yiqi Zhang, Alexander V. Kireev, Victor O. Kompanets +12
Quantized vortices are ubiquitous in physics, spanning superconductivity, astrophysics, superfluid condensed matter systems, and nonlinear optics. Yet embedding vorticity into topo…
Control of eigenmode localization and coupling anisotropy by multiscan femtosecond laser writing
S. A. Zhuravitskii, N. S. Kostyuchenko, N. N. Skryabin +5
The multiscan method is widely used in femtosecond laser writing of waveguide systems to increase the refractive index contrast and to control the eigenmode shape. Here, we investi…
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…
Observation of nonlinear higher-order topological insulators with unconventional boundary truncations
Changming Huang, Alexander V. Kireev, Yuxin Jiang +10
In higher-order topological insulators (HOTIs), topologically nontrivial phases are usually associated with the shift of Wannier centers to topologically nontrivial positions on th…
Observation of nonlinear topological corner states originating from different spectral charges
Victor O. Kompanets, Suge Feng, Yiqi Zhang +11
Higher-order topological insulators (HOTIs) are unique topological materials supporting edge states with the dimensionality at least by two lower than the dimensionality of the und…
Effective programming of a photonic processor with complex interferometric structure
Ilya V. Kondratyev, Kseniia N. Urusova, Artem S. Argenchiev +9
Reconfigurable photonics have rapidly become an invaluable tool for information processing. Light-based computing accelerators are promising for boosting neural network learning an…
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…
Femtosecond laser written low-loss multiscan waveguides in fused silica
N. N. Skryabin, S. A. Zhuravitskii, I. V. Dyakonov +3
We report low-loss multiscan waveguides fabricated in fused silica using femtosecond laser writing technology. The multiscan principle allows to tailor the writing regime to excel…
Observation of nonlinear fractal higher-order topological insulator
Victor O. Kompanets, Hua Zhong, Yiqi Zhang +9
Higher-order topological insulators (HOTIs) are unique materials hosting topologically protected states, whose dimensionality is at least by a factor of 2 lower than that of the bu…
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…
Observation of solitons in oscillating waveguide arrays
Antonina A. Arkhipova, Yiqi Zhang, Yaroslav V. Kartashov +8
Floquet systems with periodically varying in time parameters enable realization of unconventional topological phases that do not exist in static systems with constant parameters an…
Observation of rotation-induced light localization in waveguide arrays
Chunyan Li, Antonina A. Arkhipova, Yaroslav V. Kartashov +8
We study both, experimentally and theoretically, propagation of light in the fs-laser written rotating square waveguide arrays and present the first experimental evidence of light…
Observation of nonlinear disclination states
Boquan Ren, A. A. Arkhipova, Yiqi Zhang +10
Introduction of controllable deformations into periodic materials that lead to disclinations in their structure opens novel routes for construction of higher-order topological insu…
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…
Low-loss silicon nitride photonic ICs for single-photon applications
Kirill A. Buzaverov, Aleksandr S. Baburin, Evgeny V. Sergeev +11
Low-loss photonic integrated circuits (PICs) are the key elements in future quantum technologies, nonlinear photonics and neural networks. The low-loss photonic circuits technology…
Pulse area theorem in a single mode waveguide and its application to photon echo and optical memory in Tm3+:Y3Al5O12
S. A. Moiseev, M. M. Minnegaliev, E. S. Moiseev +6
We derive the area theorem for light pulses interacting with inhomogeneously broadened ensemble of two-level atoms in a single-mode optical waveguide and present its analytical sol…
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…
Observation of edge solitons in topological trimer arrays
Y. V. Kartashov, A. A. Arkhipova, S. A. Zhuravitskii +8
We report the experimental observation of nonlinear light localization and edge soliton formation at the edges of fs-laser written trimer waveguide arrays, where transition from no…
Waveguide lattice based architecture for multichannel optical transformations
N. N. Skryabin, I. V. Dyakonov, M. Yu. Saygin +1
We consider coupled waveguide lattices as an architecture that implement a wide range of multiport transformations. In this architecture, a particular transfer matrix is obtained t…