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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2605.23392 |
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| _version_ | 1866913155339255808 |
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| author | Zhou, Jiaru Lan, Wenze Li, Hao Hua, Yu Fu, Peng Li, Geng Fan, Xiaofeng Gu, Changzhi Liu, Baoli |
| author_facet | Zhou, Jiaru Lan, Wenze Li, Hao Hua, Yu Fu, Peng Li, Geng Fan, Xiaofeng Gu, Changzhi Liu, Baoli |
| contents | Exciton-polariton condensates is an important type of Bose-Einstein condensate whose realization requires efficient relaxation of polaritons to the band-energy minima. However, this process is often obstructed by bottleneck effect near the anticrossing region of polariton dispersion. Although the exciton-polariton bottleneck effect has been extensively observed in various polariton system, but there is no a unified views of physical origin. Here, we construct an exciton-trion-photon coupling system in monolayer WS_2/photonic-crystal slab heterostructures. Momentum-resolved photoluminescence reveals the anticrossing polariton dispersions for the exciton resonance with a ~57 meV Rabi splitting and there is no characteristic anticrossing for trion resonance with a ~5 meV splitting at ~12 K. Enhanced polariton emission is observed around the trion-polariton crossing with elevating temperature. We attributes this exotic phenomenon to bottleneck effect and indicating that small Rabi splitting is the unified origin of bottleneck effect in polariton systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_23392 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Re-evaluation of bottleneck effect via a coupled monolayer WS_2/photonic crystal heterostructure Zhou, Jiaru Lan, Wenze Li, Hao Hua, Yu Fu, Peng Li, Geng Fan, Xiaofeng Gu, Changzhi Liu, Baoli Optics Exciton-polariton condensates is an important type of Bose-Einstein condensate whose realization requires efficient relaxation of polaritons to the band-energy minima. However, this process is often obstructed by bottleneck effect near the anticrossing region of polariton dispersion. Although the exciton-polariton bottleneck effect has been extensively observed in various polariton system, but there is no a unified views of physical origin. Here, we construct an exciton-trion-photon coupling system in monolayer WS_2/photonic-crystal slab heterostructures. Momentum-resolved photoluminescence reveals the anticrossing polariton dispersions for the exciton resonance with a ~57 meV Rabi splitting and there is no characteristic anticrossing for trion resonance with a ~5 meV splitting at ~12 K. Enhanced polariton emission is observed around the trion-polariton crossing with elevating temperature. We attributes this exotic phenomenon to bottleneck effect and indicating that small Rabi splitting is the unified origin of bottleneck effect in polariton systems. |
| title | Re-evaluation of bottleneck effect via a coupled monolayer WS_2/photonic crystal heterostructure |
| topic | Optics |
| url | https://arxiv.org/abs/2605.23392 |