Dynamic Phase Enabled Topological Mode Steering in Composite Su-Schrieffer-Heeger Waveguide Arrays
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arXiv
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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866909324754812928 |
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| author | Tang, Min Pang, Chi Saggau, Christian N. Dong, Haiyun Lee, Ching Hua Thomale, Ronny Klembt, Sebastian Fulga, Ion Cosma Brink, Jeroen Van Den Vaynzof, Yana Schmidt, Oliver G. Wang, Jiawei Ma, Libo |
| author_facet | Tang, Min Pang, Chi Saggau, Christian N. Dong, Haiyun Lee, Ching Hua Thomale, Ronny Klembt, Sebastian Fulga, Ion Cosma Brink, Jeroen Van Den Vaynzof, Yana Schmidt, Oliver G. Wang, Jiawei Ma, Libo |
| contents | Topological boundary states localize at interfaces whenever the interface implies a change of the associated topological invariant encoded in the geometric phase. The generically present dynamic phase, however, which is energy and time dependent, has been known to be non-universal, and hence not to intertwine with any topological geometric phase. Using the example of topological zero modes in composite Su-Schrieffer-Heeger (c-SSH) waveguide arrays with a central defect, we report on the selective excitation and transition of topological boundary mode based on dynamic phase-steered interferences. Our work thus provides a new knob for the control and manipulation of topological states in composite photonic devices, indicating promising applications where topological modes and their bandwidth can be jointly controlled by the dynamic phase, geometric phase, and wavelength in on-chip topological devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_19427 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Dynamic Phase Enabled Topological Mode Steering in Composite Su-Schrieffer-Heeger Waveguide Arrays Tang, Min Pang, Chi Saggau, Christian N. Dong, Haiyun Lee, Ching Hua Thomale, Ronny Klembt, Sebastian Fulga, Ion Cosma Brink, Jeroen Van Den Vaynzof, Yana Schmidt, Oliver G. Wang, Jiawei Ma, Libo Optics Topological boundary states localize at interfaces whenever the interface implies a change of the associated topological invariant encoded in the geometric phase. The generically present dynamic phase, however, which is energy and time dependent, has been known to be non-universal, and hence not to intertwine with any topological geometric phase. Using the example of topological zero modes in composite Su-Schrieffer-Heeger (c-SSH) waveguide arrays with a central defect, we report on the selective excitation and transition of topological boundary mode based on dynamic phase-steered interferences. Our work thus provides a new knob for the control and manipulation of topological states in composite photonic devices, indicating promising applications where topological modes and their bandwidth can be jointly controlled by the dynamic phase, geometric phase, and wavelength in on-chip topological devices. |
| title | Dynamic Phase Enabled Topological Mode Steering in Composite Su-Schrieffer-Heeger Waveguide Arrays |
| topic | Optics |
| url | https://arxiv.org/abs/2403.19427 |