Parity-time imbalance induced by balanced gain and loss medium in non-Hermitian photonic crystals

被引：0
作者：
Wang, Qianxing
Liu, Bobo [1 ]
Ying, Lei
机构：
[1] Zhejiang Univ, Sch Phys, Hangzhou 310027, Peoples R China
来源：
JOURNAL OF OPTICS | 2024年 / 26卷 / 04期
基金：
国家重点研发计划;
关键词：
photonic crystal; parity-time symmetry; non-Hermiticity; EDGE STATES; HAMILTONIANS; REFLECTION;
D O I：
10.1088/2040-8986/ad28fc
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Photonic crystals, including gain and loss materials, show numerous intriguing features than the ordinary photonic crystals. In this work, using the full wave simulation, we numerically investigate the photonic crystals with gain and loss which are satisfying the parity-time (PT) symmetry condition to reveal the effect of PT symmetry on the optical properties of photonic crystals, including the exceptional point, distribution of electromagnetic fields and edge states. This work reveals a novel mechanism of coexistence and competition between topological states and non-Hermiticity in all-dielectric photonic crystals and provides an innovative understanding of non-Hermiticity in topological photonic systems.
引用
收藏
页数：12
相关论文
共 40 条
[1]   Real spectra in non-Hermitian Hamiltonians having PT symmetry [J].
Bender, CM ;
Boettcher, S .
PHYSICAL REVIEW LETTERS, 1998, 80 (24) :5243-5246
[2]   The electronic properties of graphene [J].
Castro Neto, A. H. ;
Guinea, F. ;
Peres, N. M. R. ;
Novoselov, K. S. ;
Geim, A. K. .
REVIEWS OF MODERN PHYSICS, 2009, 81 (01) :109-162
[3]   Graphene photonic crystal fibre with strong and tunable light-matter interaction [J].
Chen, Ke ;
Zhou, Xu ;
Cheng, Xu ;
Qiao, Ruixi ;
Cheng, Yi ;
Liu, Can ;
Xie, Yadian ;
Yu, Wentao ;
Yao, Fengrui ;
Sun, Zhipei ;
Wang, Feng ;
Liu, Kaihui ;
Liu, Zhongfan .
NATURE PHOTONICS, 2019, 13 (11) :754-+
[4]   Photonic spin Hall effect in a parity-time symmetric cavity and its sensing application [J].
Cheng, Jie ;
Liu, Dapeng ;
Dong, Peng ;
Wang, Gaojun ;
Chi, Fengfeng ;
Liu, Shengli .
OPTICS COMMUNICATIONS, 2021, 498 (498)
[5]   PT-symmetric phase in kagome-based photonic lattices [J].
Chern, Gia-Wei ;
Saxena, Avadh .
OPTICS LETTERS, 2015, 40 (24) :5806-5809
[6]   Eigenvalues of complex Hamiltonians with PT-symmetry. I [J].
Delabaere, E ;
Pham, F .
PHYSICS LETTERS A, 1998, 250 (1-3) :25-28
[7]   Non-Hermitian topology and exceptional-point geometries [J].
Ding, Kun ;
Fang, Chen ;
Ma, Guancong .
NATURE REVIEWS PHYSICS, 2022, 4 (12) :745-760
[8]   Ten years of nonlinear optics in photonic crystal fibre [J].
Dudley, John M. ;
Taylor, J. Roy .
NATURE PHOTONICS, 2009, 3 (02) :85-90
[9]   Slow-light-enhanced gain in active photonic crystal waveguides [J].
Ek, Sara ;
Lunnemann, Per ;
Chen, Yaohui ;
Semenova, Elizaveta ;
Yvind, Kresten ;
Mork, Jesper .
NATURE COMMUNICATIONS, 2014, 5
[10]   Theory of coupled optical PT-symmetric structures [J].
El-Ganainy, R. ;
Makris, K. G. ;
Christodoulides, D. N. ;
Musslimani, Ziad H. .
OPTICS LETTERS, 2007, 32 (17) :2632-2634
1234