Zobrazeno 1 - 10
of 1 173
pro vyhledávání: '"Zhang Yiqi"'
Publikováno v:
Nanophotonics, Vol 13, Iss 21, Pp 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:
https://doaj.org/article/6d24570bdc9847b0b48cd17e4f78334f
Autor:
Ren Boquan, Kartashov Yaroslav V., Maczewsky Lukas J., Kirsch Marco S., Wang Hongguang, Szameit Alexander, Heinrich Matthias, Zhang Yiqi
Publikováno v:
Nanophotonics, Vol 12, Iss 19, Pp 3829-3838 (2023)
We study linear and nonlinear higher-order topological insulators (HOTIs) based on waveguide arrays arranged into Sierpiński gasket and Sierpiński carpet structures, both of which have non-integer effective Hausdorff dimensionality. Such fractal st
Externí odkaz:
https://doaj.org/article/292625e99f2f449aa11daae07e773ab1
Autor:
Ren Boquan, Wang Hongguang, Kompanets Victor O., Kartashov Yaroslav V., Li Yongdong, Zhang Yiqi
Publikováno v:
Nanophotonics, Vol 10, Iss 13, Pp 3559-3566 (2021)
Topological edge solitons propagating along the edge of a photonic topological insulator are localized self-sustained hybrid states that are immune to defects/disorders due to the protection of the edge states stemming from the nontrivial topology of
Externí odkaz:
https://doaj.org/article/c5fb0cb64f594d418796ef76e1f99937
We discover a novel class of dissipative light bullets whose spatial profiles may be drastically reshaped along the bulk, edges and corners of the Su-Schrieffer-Heeger lattice owing to the dissipative and topological nature of the system. These light
Externí odkaz:
http://arxiv.org/abs/2410.05981
Publikováno v:
APL Photonics 9, 086113 (2024)
$\pi$ modes are unique topological edge states appearing in Floquet systems with periodic modulations of the underlying lattice structure in evolution variable, such as dynamically modulated Su-Schrieffer-Heeger (SSH) lattices. These edge states are
Externí odkaz:
http://arxiv.org/abs/2408.07323
Publikováno v:
Guan'gai paishui xuebao, Vol 40, Iss 6, Pp 94-99 (2021)
【Objective】 Pumping station is an important component in hydraulic projects and its performance and efficiency are affected by many factors. This paper aims to investigate the performance of the box-type bidirectional vertical pump, as well as th
Externí odkaz:
https://doaj.org/article/defd43b9ed3b44309c8e52eb0c444347
We propose a chiral bulk soliton in a nonlinear photonic lattice with decorated boundaries, presenting a novel approach to manipulate photonic transport without extensive bulk modifications. Unlike traditional methods that rely on topological edge an
Externí odkaz:
http://arxiv.org/abs/2407.08267
Publikováno v:
Optics Letters 49, 4110-4113 (2024)
The type-II Dirac cone is a special feature of the band structure, whose Fermi level is represented by a pair of crossing lines. It has been demonstrated that such a structure is useful for investigating topological edge solitons, and more specifical
Externí odkaz:
http://arxiv.org/abs/2407.05097
Publikováno v:
Photonics Research 12, 2078-2087 (2024)
Topological insulators are most frequently constructed using lattices with specific degeneracies in their linear spectra, such as Dirac points. For a broad class of lattices, such as honeycomb ones, these points and associated Dirac cones generally a
Externí odkaz:
http://arxiv.org/abs/2407.05086
Autor:
Kompanets, Victor O., Zhong, Hua, Zhang, Yiqi, Kartashov, Yaroslav V., Li, Yongdong, Zhuravitskii, Sergei A., Skryabin, Nikolay N., Dyakonov, Ivan V., Kalinkin, Alexander A., Kulik, Sergei P., Chekalin, Sergey V., Zadkov, Victor N.
Publikováno v:
Light: Science and Applications 13, 264 (2024)
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 bulk. Topological states in such insulators may be strongly confined in
Externí odkaz:
http://arxiv.org/abs/2402.01979