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Chirality-enabled topological phase transitions in parity-time symmetric systems

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成果类型:
期刊论文
作者:
Cao, Yong*;Sheng, Lijuan;Zhou, Qiang;Wang, Rong;Chen, Zhenkuan;...
通讯作者:
Cao, Yong;Ling, XH
作者机构:
[Cao, Yong; Wang, Rong; Chen, Zhenkuan; Cao, Y; Ling, Xiaohui; Zhou, Qiang; Sheng, Lijuan] Hengyang Normal Univ, Coll Phys & Elect Engn, Lab Spin Orbit Photon, Hengyang 421002, Peoples R China.
通讯机构:
[Cao, Y; Ling, XH ] H
Hengyang Normal Univ, Coll Phys & Elect Engn, Lab Spin Orbit Photon, Hengyang 421002, Peoples R China.
语种:
英文
关键词:
optical spin-orbit interactions;topological phase transitions;parity-time symmetric;chirality
期刊:
New Journal of Physics
ISSN:
1367-2630
年:
2024
卷:
26
期:
6
页码:
063040
基金类别:
National Natural Science Foundation of China [12174091]; Doctorial Start-up Fund of Hengyang Normal University [2023QD30]; Scientific Research Fund of Hunan Provincial Education Department of China [23B0675]; Hunan Engineering Research Center of Uranium Exploration Technology [2023HSKFJJ020]
机构署名:
本校为第一且通讯机构
院系归属:
物理与电子工程学院
摘要:
Photonic spin Hall effect (PSHE) in chiral PT-symmetric systems exhibits many exotic features, but the underlying physical mechanism has not been well elucidated. Here, through rigorous calculations based on full-wave theory, we reveal the physical mechanism of the exotic PSHE and identify a chirality-enabled topological phase transition. When circularly polarized light is incident on a chiral PT-symmetric system, the transmitted beam contains two components: a spin-flipped abnormal mode that acquires a geometric phase (exhibiting a vortex or a spin-Hall shift), and a spin-maintained normal mo...

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