Phase of Topological Lattice with Leaky Guided Mode Resonance
Topological nature in different areas of physics and electronics has often been characterized and controlled through topological invariants depending on the global properties of the material. The validity of bulk–edge correspondence and symmetry-related topological invariants has been extended to no...
| Main Authors: | , , , , |
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| Format: | Article |
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MDPI AG
2023-12-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/24/3152 |
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| author | Heejin Choi Seonyeong Kim Markus Scherrer Kirsten Moselund Chang-Won Lee |
| author_facet | Heejin Choi Seonyeong Kim Markus Scherrer Kirsten Moselund Chang-Won Lee |
| author_sort | Heejin Choi |
| collection | DOAJ |
| description | Topological nature in different areas of physics and electronics has often been characterized and controlled through topological invariants depending on the global properties of the material. The validity of bulk–edge correspondence and symmetry-related topological invariants has been extended to non-Hermitian systems. Correspondingly, the value of geometric phases, such as the Pancharatnam–Berry or Zak phases, under the adiabatic quantum deformation process in the presence of non-Hermitian conditions, are now of significant interest. Here, we explicitly calculate the Zak phases of one-dimensional topological nanobeams that sustain guided-mode resonances, which lead to energy leakage to a continuum state. The retrieved Zak phases show as zero for trivial and as π for nontrivial photonic crystals, respectively, which ensures bulk–edge correspondence is still valid for certain non-Hermitian conditions. |
| first_indexed | 2024-03-08T20:28:48Z |
| format | Article |
| id | doaj.art-32ecf0d7371b4861a378d980af217b69 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-08T20:28:48Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-32ecf0d7371b4861a378d980af217b692023-12-22T14:29:18ZengMDPI AGNanomaterials2079-49912023-12-011324315210.3390/nano13243152Phase of Topological Lattice with Leaky Guided Mode ResonanceHeejin Choi0Seonyeong Kim1Markus Scherrer2Kirsten Moselund3Chang-Won Lee4Institute of Advanced Optics and Photonics, Hanbat National University, Daejeon 34158, Republic of KoreaLaboratory of Nano and Quantum Technologies, Paul Scherrer Institut, 5232 Villigen, SwitzerlandIBM Research Europe—Zürich, 8803 Rüschlikon, SwitzerlandLaboratory of Nano and Quantum Technologies, Paul Scherrer Institut, 5232 Villigen, SwitzerlandInstitute of Advanced Optics and Photonics, Hanbat National University, Daejeon 34158, Republic of KoreaTopological nature in different areas of physics and electronics has often been characterized and controlled through topological invariants depending on the global properties of the material. The validity of bulk–edge correspondence and symmetry-related topological invariants has been extended to non-Hermitian systems. Correspondingly, the value of geometric phases, such as the Pancharatnam–Berry or Zak phases, under the adiabatic quantum deformation process in the presence of non-Hermitian conditions, are now of significant interest. Here, we explicitly calculate the Zak phases of one-dimensional topological nanobeams that sustain guided-mode resonances, which lead to energy leakage to a continuum state. The retrieved Zak phases show as zero for trivial and as π for nontrivial photonic crystals, respectively, which ensures bulk–edge correspondence is still valid for certain non-Hermitian conditions.https://www.mdpi.com/2079-4991/13/24/3152topological invariantsZak phasesnon-Hermitianguided-mode resonancephotonic crystal |
| spellingShingle | Heejin Choi Seonyeong Kim Markus Scherrer Kirsten Moselund Chang-Won Lee Phase of Topological Lattice with Leaky Guided Mode Resonance Nanomaterials topological invariants Zak phases non-Hermitian guided-mode resonance photonic crystal |
| title | Phase of Topological Lattice with Leaky Guided Mode Resonance |
| title_full | Phase of Topological Lattice with Leaky Guided Mode Resonance |
| title_fullStr | Phase of Topological Lattice with Leaky Guided Mode Resonance |
| title_full_unstemmed | Phase of Topological Lattice with Leaky Guided Mode Resonance |
| title_short | Phase of Topological Lattice with Leaky Guided Mode Resonance |
| title_sort | phase of topological lattice with leaky guided mode resonance |
| topic | topological invariants Zak phases non-Hermitian guided-mode resonance photonic crystal |
| url | https://www.mdpi.com/2079-4991/13/24/3152 |
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