Floquet higher-order exceptional points and dynamics in PT-symmetric quadrimer waveguides
Floquet higher-order exceptional points and dynamics in PT-symmetric quadrimer waveguides
复制标题
PT 对称四聚体波导中的 Floquet 高阶异常点和动力学
DOI:
10.1140/epjd/e2020-10021-0
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发表时间:
2020-06
影响因子:
1.8
通讯作者:
Deng Haiming
中科院分区:
文献类型:
--
作者:
Jia Jun;Zhu Bo;Ye Fuqiu;Zhong Honghua;Deng Haiming
AbstractWe investigate the effect of periodic modulation on PT-symmetry recovery, higher-order exceptional points (EPs) and dynamics for a periodically modulated PT-symmetric quadrimer waveguide system. It is analytically and numerically revealed that the periodic modulation not only can restore the broken PT symmetry, but also can manipulate the PT symmetry by tuning modulation amplitude. Furthermore, we found that multiple EPs can emerge, and as the modulation amplitude vary, these EPs can collide and merge, leading to higher-order Floquet singularities. By defining average relative light intensity distribution, we explore the dynamical characteristics nearby these EPs. It is found that we can control the light tunneling direction of optical quadrimer waveguide via periodic modulation and proper choice of gain/loss parameters.Graphical abstract
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影响因子:
8.6
作者:
Bender, CM;Boettcher, S
通讯作者:
Boettcher, S
影响因子:
8.6
作者:
Musslimani, Z. H.;Makris, K. G.;Christodoulides, D. N.
通讯作者:
Christodoulides, D. N.
影响因子:
3.6
作者:
N. Rivolta;B. Maes
通讯作者:
N. Rivolta;B. Maes
DOI:
10.1088/1751-8113/46/37/375304
发表时间:
2013-06
期刊:
Journal of Physics A: Mathematical and Theoretical
影响因子:
--
作者:
Kai Li;Panos Kevrekidis;D. Frantzeskakis;C. Rüter;D. Kip
通讯作者:
Kai Li;Panos Kevrekidis;D. Frantzeskakis;C. Rüter;D. Kip
DOI:
10.1103/physreve.83.066608
发表时间:
2011-02
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
作者:
Kai Li;Panos Kevrekidis
通讯作者:
Kai Li;Panos Kevrekidis