Zobrazeno 1 - 10
of 584
pro vyhledávání: '"A. P. Konotop"'
Publikováno v:
Physical Review Research 6, 043089 (2024)
We show that transfer of matter-wave solitons and half-vortex solitons in a spin-orbit coupled Bose-Einstein condensate between two (or more) arbitrarily chosen sites of an optical lattice can be implemented using the adiabatic passage. The underlyin
Externí odkaz:
http://arxiv.org/abs/2411.02839
Publikováno v:
Nanophotonics 13, 4047-4056 (2024)
Flat-band periodic materials are characterized by a linear spectrum containing at least one band where the propagation constant remains nearly constant irrespective of the Bloch momentum across the Brillouin zone. These materials provide a unique pla
Externí odkaz:
http://arxiv.org/abs/2407.11811
Bloch oscillations and Landau-Zener tunneling are ubiquitous phenomena which are sustained by a band-gap spectrum of a periodic Hamiltonian and can be observed in dynamics of a quantum particle or a wavepacket in a periodic potential under action of
Externí odkaz:
http://arxiv.org/abs/2404.00642
Autor:
Ivanov, S. K., Zhuravitskii, S. A., Skryabin, N. N., Dyakonov, I. V., Kalinkin, A. A., Kulik, S. P., Kartashov, Y. V., Konotop, V. V., Zadkov, V. N.
Publikováno v:
Laser & Photonics Reviews 17, 10, 2300024 (2023)
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 far beyond quantum systems, where it was introduced, finding physical a
Externí odkaz:
http://arxiv.org/abs/2308.00523
Publikováno v:
Chaos, Solitons and Fractals 174 (2023) 113848
We consider Bose-Einstein condensate (BEC) subject to the action of spin-orbit-coupling (SOC) periodically modulated in the radial direction. In contrast to the commonly known principle that periodic potentials do not create bound states, the binary
Externí odkaz:
http://arxiv.org/abs/2307.07845
Publikováno v:
Physical Review A 108, 013307 (2023)
We investigate families of soliton solutions in a spin-orbit coupled Bose-Einstein condensate embedded in an optical lattice, which bifurcate from the nearly flat lowest band. Unlike the conventional gap solitons the obtained solutions have the shape
Externí odkaz:
http://arxiv.org/abs/2306.16813
Publikováno v:
Optics Letters 48, 14, 3797-3800 (2023)
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 lattices having commensurate and incommensurate geometries (i.e., constructed
Externí odkaz:
http://arxiv.org/abs/2306.15358
Autor:
Arkhipova, A. A., Kartashov, Y. V., Ivanov, S. K., Zhuravitskii, S. A., Skryabin, N. N., Dyakonov, I. V., Kalinkin, A. A., Kulik, S. P., Kompanets, V. O., Chekalin, S. V., Ye, F., Konotop, V. V., Torner, L., Zadkov, V. N.
Publikováno v:
Physical Review Letters 130, 083801 (2023)
We observe linear and nonlinear light localization at the edges and in the corners of truncated moir\'e lattices created by the superposition of periodic mutually-twisted at Pythagorean angles square sublattices. Experimentally exciting corner linear
Externí odkaz:
http://arxiv.org/abs/2301.02090
Autor:
Wang, Peng, Fu, Qidong, Peng, Ruihan, Kartashov, Yaroslav V., Torner, Lluis, Konotop, Vladimir V., Ye, Fangwei
Publikováno v:
Nature Communications,13, 6738 (2022)
Continuous and quantized transports are profoundly different. The latter is determined by the global rather than local properties of a system, it exhibits unique topological features, and its ubiquitous nature causes its occurrence in many areas of s
Externí odkaz:
http://arxiv.org/abs/2211.05388
Publikováno v:
Optics Letters 47, 5160-5163 (2022)
A honeycomb array of helical waveguides with zigzag-zigzag edges and a refractive index gradient orthogonal to the edges may support Floquet bound states in continuum (BICs). The gradient of the refractive index leads to strong asymmetry of the Floqu
Externí odkaz:
http://arxiv.org/abs/2209.09644