Anti-parity-time topologically undefined state
Researches on the topological edge state in the photonic lattice are attracting considerable attention. Here, we report the studies on a particular state for which the topological invariant is undefined. We constructed an anti-parity-time-symmetric photonic lattice by using the perturbation method....
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2021-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/ac4052 |
| _version_ | 1827871210214522880 |
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| author | Haohao Wang Kaiwen Ji Yuandan Wang Zhenjuan Liu Yuanmei Gao Yanlong Shen Shi Bai Koji Sugioka Xinyuan Qi |
| author_facet | Haohao Wang Kaiwen Ji Yuandan Wang Zhenjuan Liu Yuanmei Gao Yanlong Shen Shi Bai Koji Sugioka Xinyuan Qi |
| author_sort | Haohao Wang |
| collection | DOAJ |
| description | Researches on the topological edge state in the photonic lattice are attracting considerable attention. Here, we report the studies on a particular state for which the topological invariant is undefined. We constructed an anti-parity-time-symmetric photonic lattice by using the perturbation method. Light distributes only in the wide waveguides with equal magnitude for the state with undefined winding numbers. Further studies show that the equal intensity transmission is unaffected except for the defect site. Our work provides a new way to study the topological state and the equally divided light transmission and might be applicable in optical circuits and optical interconnect. |
| first_indexed | 2024-03-12T16:07:22Z |
| format | Article |
| id | doaj.art-3b2d8a948871494693a5be7f8baa2c78 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:07:22Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-3b2d8a948871494693a5be7f8baa2c782023-08-09T14:17:49ZengIOP PublishingNew Journal of Physics1367-26302021-01-01231212303910.1088/1367-2630/ac4052Anti-parity-time topologically undefined stateHaohao Wang0Kaiwen Ji1Yuandan Wang2Zhenjuan Liu3Yuanmei Gao4Yanlong Shen5Shi Bai6Koji Sugioka7Xinyuan Qi8School of Physics, Northwest University , 710127, Xi’an, People’s Republic of ChinaSchool of Physics, Northwest University , 710127, Xi’an, People’s Republic of ChinaSchool of Physics, Northwest University , 710127, Xi’an, People’s Republic of ChinaSchool of Physics, Northwest University , 710127, Xi’an, People’s Republic of ChinaCollege of Physics and Electronics, Shandong Normal University , Jinan, 250014, People’s Republic of ChinaState Key Laboratory of Laser Interaction with Matter, Northwest Institute of Nuclear Technology , Xi’an Shaanxi 710024, People’s Republic of ChinaRIKEN Center for Advanced Photonics , Hirosawa 2-1, Wako, Saitama 351-0198, JapanRIKEN Center for Advanced Photonics , Hirosawa 2-1, Wako, Saitama 351-0198, JapanSchool of Physics, Northwest University , 710127, Xi’an, People’s Republic of ChinaResearches on the topological edge state in the photonic lattice are attracting considerable attention. Here, we report the studies on a particular state for which the topological invariant is undefined. We constructed an anti-parity-time-symmetric photonic lattice by using the perturbation method. Light distributes only in the wide waveguides with equal magnitude for the state with undefined winding numbers. Further studies show that the equal intensity transmission is unaffected except for the defect site. Our work provides a new way to study the topological state and the equally divided light transmission and might be applicable in optical circuits and optical interconnect.https://doi.org/10.1088/1367-2630/ac4052undefined winding numbertopological photonicsanti-parity-time symmetry |
| spellingShingle | Haohao Wang Kaiwen Ji Yuandan Wang Zhenjuan Liu Yuanmei Gao Yanlong Shen Shi Bai Koji Sugioka Xinyuan Qi Anti-parity-time topologically undefined state New Journal of Physics undefined winding number topological photonics anti-parity-time symmetry |
| title | Anti-parity-time topologically undefined state |
| title_full | Anti-parity-time topologically undefined state |
| title_fullStr | Anti-parity-time topologically undefined state |
| title_full_unstemmed | Anti-parity-time topologically undefined state |
| title_short | Anti-parity-time topologically undefined state |
| title_sort | anti parity time topologically undefined state |
| topic | undefined winding number topological photonics anti-parity-time symmetry |
| url | https://doi.org/10.1088/1367-2630/ac4052 |
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