Reconfigurable chiral exceptional point and tunable non-reciprocity in a non-Hermitian system with phase-change material Article Swipe
Changdong Chen
,
Daxing Dong
,
Lina Zhao
,
Youwen Liu
,
Xiaopeng Hu
,
Xiao Li
,
Yangyang Fu
·
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.1364/oe.459860
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.1364/oe.459860
Non-Hermitian optics has emerged as a feasible and versatile platform to explore many extraordinary wave phenomena and novel applications. However, owing to ineluctable systematic errors, the constructed non-Hermitian phenomena could be easily broken, thus leading to a compromising performance in practice. Here we theoretically proposed a dynamically tunable mechanism through GST-based phase-change material (PCM) to achieve a reconfigurable non-Hermitian system, which is robust to access the chiral exceptional point (EP). Assisted by PCM that provides tunable coupling efficiency, the effective Hamiltonian of the studied doubly-coupled-ring-based non-Hermitian system can be effectively modulated to resist the external perturbations, thus enabling the reconfigurable chiral EP and a tunable non-reciprocal transmission. Moreover, such tunable properties are nonvolatile and require no static power consumption. With these superior performances, our findings pave a promising way for reconfigurable non-Hermitian photonic devices, which may find applications in tunable on-chip sensors, isolators and so on.
Related Topics
Concepts
Hermitian matrix
Reciprocity (cultural anthropology)
Hamiltonian (control theory)
Reciprocal
Photonics
Optics
Materials science
Topology (electrical circuits)
Physics
Electronic engineering
Optoelectronics
Quantum mechanics
Electrical engineering
Psychology
Social psychology
Linguistics
Philosophy
Mathematics
Engineering
Mathematical optimization
Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1364/oe.459860
- OA Status
- gold
- References
- 62
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4284880330
All OpenAlex metadata
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https://openalex.org/W4284880330Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1364/oe.459860Digital Object Identifier
- Title
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Reconfigurable chiral exceptional point and tunable non-reciprocity in a non-Hermitian system with phase-change materialWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2022Year of publication
- Publication date
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2022-07-08Full publication date if available
- Authors
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Changdong Chen, Daxing Dong, Lina Zhao, Youwen Liu, Xiaopeng Hu, Xiao Li, Yangyang FuList of authors in order
- Landing page
-
https://doi.org/10.1364/oe.459860Publisher landing page
- Open access
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YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
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https://doi.org/10.1364/oe.459860Direct OA link when available
- Concepts
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Hermitian matrix, Reciprocity (cultural anthropology), Hamiltonian (control theory), Reciprocal, Photonics, Optics, Materials science, Topology (electrical circuits), Physics, Electronic engineering, Optoelectronics, Quantum mechanics, Electrical engineering, Psychology, Social psychology, Linguistics, Philosophy, Mathematics, Engineering, Mathematical optimizationTop concepts (fields/topics) attached by OpenAlex
- Cited by
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0Total citation count in OpenAlex
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62Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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