Topological edge states in coupled photonic waveguides under periodic driving

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F19%3A00519186" target="_blank" >RIV/67985882:_____/19:00519186 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26210/19:PU135674

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Topological edge states in coupled photonic waveguides under periodic driving

Popis výsledku v původním jazyce

Discrete photonic systems such as coupled waveguide arrays represent convenient systems in which one can explore a rich variety of the quantum-optical analogies. We consider a photonic implementation of the Su-Schriefer-Heeger (SSH) model in which a chain of identical sites coupled via alternating strong and weak bonds is replaced by an array of identical single-mode waveguides where their mutual coupling is modulated by bending the waveguides in transversal or longitudinal direction. By using Floquet theory we study the spectral properties of the system consisting of an infinite chain of coupled dielectric waveguides under time-periodic driving. We determine the spectral properties of such system by using coupled-mode theory (CMT) to verify the results predicted by Floquet analysis [1]. In particular, we studied the population of the newly created edge states at the topological transitions in Floquet spectra at which the topologically trivial system becomes nontrivial and vice versa. The results of the numerical simulations confirm the predictions of Floquet analysis and resemble complementarity in the annihilation and creation of the edge states which occur at certain regions of quasienergy spectra due to the competition between the native topology and that of due to the driving

Název v anglickém jazyce

Topological edge states in coupled photonic waveguides under periodic driving

Popis výsledku anglicky

Discrete photonic systems such as coupled waveguide arrays represent convenient systems in which one can explore a rich variety of the quantum-optical analogies. We consider a photonic implementation of the Su-Schriefer-Heeger (SSH) model in which a chain of identical sites coupled via alternating strong and weak bonds is replaced by an array of identical single-mode waveguides where their mutual coupling is modulated by bending the waveguides in transversal or longitudinal direction. By using Floquet theory we study the spectral properties of the system consisting of an infinite chain of coupled dielectric waveguides under time-periodic driving. We determine the spectral properties of such system by using coupled-mode theory (CMT) to verify the results predicted by Floquet analysis [1]. In particular, we studied the population of the newly created edge states at the topological transitions in Floquet spectra at which the topologically trivial system becomes nontrivial and vice versa. The results of the numerical simulations confirm the predictions of Floquet analysis and resemble complementarity in the annihilation and creation of the edge states which occur at certain regions of quasienergy spectra due to the competition between the native topology and that of due to the driving

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů