Fully programmable slow light based on a spinor representation of generalized coupled-resonator-induced transparency
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866912893969104896 |
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| author | Park, Seungkyun Chae, Beomjoon Park, Hyungchul Yu, Sunkyu Piao, Xianji Park, Namkyoo |
| author_facet | Park, Seungkyun Chae, Beomjoon Park, Hyungchul Yu, Sunkyu Piao, Xianji Park, Namkyoo |
| contents | Electromagnetically induced transparency (EIT), arising from quantum interference in coherently driven atomic systems, has inspired a variety of photonic analogues, such as coupled-resonator-induced transparency (CRIT) built on the quantum-state modelling using resonators. Although CRIT serves as a building block for slow light in photonic integrated circuits, recent advances in topological photonics motivate a further generalization of both EIT and CRIT using gauge-field degrees of freedom. Here, we propose generalized CRIT via a spinor representation with dual-channel gauge fields, enabling fully programmable CRIT featuring dynamical spectral engineering. We generalize the traditional EIT framework by introducing a spinor representation of bright- and dark-mode resonances, yielding a unified description of design parameters through universal unitary operations. Implementing a coupled-resonator building block that accesses the entire design space through dual-channel gauge fields, we demonstrate a programmable slow-light band in a one-dimensional CRIT lattice. These results address urgent needs in optical interconnects, such as tunable delay lines, reconfigurable synchronization, and linear frequency conversion. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_09459 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Fully programmable slow light based on a spinor representation of generalized coupled-resonator-induced transparency Park, Seungkyun Chae, Beomjoon Park, Hyungchul Yu, Sunkyu Piao, Xianji Park, Namkyoo Optics Electromagnetically induced transparency (EIT), arising from quantum interference in coherently driven atomic systems, has inspired a variety of photonic analogues, such as coupled-resonator-induced transparency (CRIT) built on the quantum-state modelling using resonators. Although CRIT serves as a building block for slow light in photonic integrated circuits, recent advances in topological photonics motivate a further generalization of both EIT and CRIT using gauge-field degrees of freedom. Here, we propose generalized CRIT via a spinor representation with dual-channel gauge fields, enabling fully programmable CRIT featuring dynamical spectral engineering. We generalize the traditional EIT framework by introducing a spinor representation of bright- and dark-mode resonances, yielding a unified description of design parameters through universal unitary operations. Implementing a coupled-resonator building block that accesses the entire design space through dual-channel gauge fields, we demonstrate a programmable slow-light band in a one-dimensional CRIT lattice. These results address urgent needs in optical interconnects, such as tunable delay lines, reconfigurable synchronization, and linear frequency conversion. |
| title | Fully programmable slow light based on a spinor representation of generalized coupled-resonator-induced transparency |
| topic | Optics |
| url | https://arxiv.org/abs/2602.09459 |