Tilted Material in an Optical Cavity: Light-Matter Moiré Effect and Coherent Frequency Conversion
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915581291134976 |
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| author | Manjalingal, Arshath Koshkaki, Saeed Rahmanian Blackham, Logan Mandal, Arkajit |
| author_facet | Manjalingal, Arshath Koshkaki, Saeed Rahmanian Blackham, Logan Mandal, Arkajit |
| contents | Exciton-polaritons formed inside optical cavities offer a highly tunable platform for exploring novel quantum phenomena. Here, we introduce and theoretically characterize a light-matter moiré effect (LMME) that arises when a 2D material is tilted inside a planar optical cavity, in contrast to stacking multiple layers at a twist angle as is done in forming 2D moiré hetero-structures. We show that this geometric tilt produces emergent periodicity in the light-matter coupling, yielding displaced replicas of the polariton dispersion and flat bands near the Brillouin-zone center. Through time-dependent quantum dynamical simulations, we demonstrate that LMME enables coherent frequency conversion and remains robust against phonon-induced decoherence. Our findings establish LMME as a new platform for engineering polariton band structures, the generation of flat bands and performing coherent frequency conversion relevant for developing polariton-based quantum devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_11237 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Tilted Material in an Optical Cavity: Light-Matter Moiré Effect and Coherent Frequency Conversion Manjalingal, Arshath Koshkaki, Saeed Rahmanian Blackham, Logan Mandal, Arkajit Optics Materials Science Quantum Physics Exciton-polaritons formed inside optical cavities offer a highly tunable platform for exploring novel quantum phenomena. Here, we introduce and theoretically characterize a light-matter moiré effect (LMME) that arises when a 2D material is tilted inside a planar optical cavity, in contrast to stacking multiple layers at a twist angle as is done in forming 2D moiré hetero-structures. We show that this geometric tilt produces emergent periodicity in the light-matter coupling, yielding displaced replicas of the polariton dispersion and flat bands near the Brillouin-zone center. Through time-dependent quantum dynamical simulations, we demonstrate that LMME enables coherent frequency conversion and remains robust against phonon-induced decoherence. Our findings establish LMME as a new platform for engineering polariton band structures, the generation of flat bands and performing coherent frequency conversion relevant for developing polariton-based quantum devices. |
| title | Tilted Material in an Optical Cavity: Light-Matter Moiré Effect and Coherent Frequency Conversion |
| topic | Optics Materials Science Quantum Physics |
| url | https://arxiv.org/abs/2508.11237 |