74 citations · 488 across the 25 of their papers we have counts for
25 papers
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…
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…
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…
Time-domain Hong-Ou-Mandel interference of quasi-thermal fields and its application in linear optical circuit characterization
Anna Romanova, Konstantin Katamadze, Grant Avosopiants +6
We study temporal correlations of interfering quasi-thermal fields, obtained by scattering laser radiation on a rotating ground glass disk. We show that the Doppler effect causes o…
CNOT gate on reverse photon modes in ring cavity
Sergey N. Andrianov, Narkis M. Arslanov, Konstantin I. Gerasimov +2
Photon modes of reverse rotation in ring QED-cavity coupled with single atom are considered. By applying Schrieffer-Wolf transformation for the off-resonant light-atom interaction,…
Reconfigurable photonics on a glass chip
Ivan Dyakonov, Ivan Pogorelov, Ivan Bobrov +5
Reconfigurability of integrated photonic chips plays a key role in current experiments in the area of linear-optical quantum computing. We demonstrate a reconfigurable multiport in…
Observation and investigation of narrow optical transitions of 167Er3+ ions in femtosecond laser printed waveguides in 7LiYF4 crystal
M. M. Minnegaliev, I. V. Dyakonov, K. I. Gerasimov +5
We produced optical waveguides in the 167Er3+ :7LiYF4 crystal with diameters ranging from 30 to 100 mkm by using the depressed-cladding approach with femtosecond laser. These waveg…
Laser-written polarizing directional coupler with reduced interaction length
I. V. Dyakonov, M. Yu. Saygin, I. V. Kondratyev +3
Integrated optical devices are becoming a common tool in modern optical science and engineering. This devices should be designed to allow for precise control and manipulation of li…
Multi-photon subtracted thermal states: description, preparation and reconstruction
Yu. I. Bogdanov, K. G. Katamadze, G. V. Avosopyants +4
We present a study of optical quantum states generated by subtraction of photons from the thermal state. Some aspects of their photon number and quadrature distributions are discus…
Low-loss single-mode integrated waveguides in soda-lime glass
Ivan Dyakonov, Alexander Kalinkin, Mikhail Saygin +4
Low-loss single-mode optical waveguide fabrication process in extra-white soda-lime glass is demonstrated. Waveguiding structures are formed in bulk substrates employing femtosecon…
Quantum polarization transformations in anisotropic dispersive medium
Yu. I. Bogdanov, A. A. Kalinkin, S. P. Kulik +2
Based on the concept of chi-matrix and Choi-Jamiolkowski states we develop the approach of quantum process reconstruction. Special attention is paid to the adequacy of applied reco…
Self-calibrating Tomography for Angular Schmidt Modes in Spontaneous Parametric Down-Conversion
Stanislav Straupe, Denis Ivanov, Alexander Kalinkin +3
We report an experimental self-calibrating tomography scheme for entanglement characterization in high-dimensional quantum systems using Schmidt decomposition techniques. The self-…