Microscopic theory of polariton-polariton interactions
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arXiv
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| Format: | Preprint |
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2022
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| _version_ | 1866929607720042496 |
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| author | Christensen, Esben R. Camacho-Guardian, Arturo Cotlet, Ovidiu Imamoglu, Atac Wouters, Michiel Bruun, Georg M. Carusotto, Iacopo |
| author_facet | Christensen, Esben R. Camacho-Guardian, Arturo Cotlet, Ovidiu Imamoglu, Atac Wouters, Michiel Bruun, Georg M. Carusotto, Iacopo |
| contents | We develop a comprehensive theoretical model for the interaction strength between a pair of exciton-polaritons in microcavity devices. Ab initio numerical calculations for dipolar polaritons in one dimension are used as a starting point to build a Born-Oppenheimer theory that generally applies to generic -- dipolar or non-dipolar polaritons -- in both one and two dimensions. This theory anticipates that the strong coupling to the cavity mode leads to a drastic enhancement of the polariton interactions as compared to bare excitons, and predicts unexpected scaling laws in the interaction strength as a function of system parameters. Comparisons with available experimental data are drawn, and specific suggestions to validate it with new experiments are made. Promising strategies towards the observation of a strong polariton blockade regime are finally sketched. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2212_02597 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Microscopic theory of polariton-polariton interactions Christensen, Esben R. Camacho-Guardian, Arturo Cotlet, Ovidiu Imamoglu, Atac Wouters, Michiel Bruun, Georg M. Carusotto, Iacopo Mesoscale and Nanoscale Physics Quantum Gases We develop a comprehensive theoretical model for the interaction strength between a pair of exciton-polaritons in microcavity devices. Ab initio numerical calculations for dipolar polaritons in one dimension are used as a starting point to build a Born-Oppenheimer theory that generally applies to generic -- dipolar or non-dipolar polaritons -- in both one and two dimensions. This theory anticipates that the strong coupling to the cavity mode leads to a drastic enhancement of the polariton interactions as compared to bare excitons, and predicts unexpected scaling laws in the interaction strength as a function of system parameters. Comparisons with available experimental data are drawn, and specific suggestions to validate it with new experiments are made. Promising strategies towards the observation of a strong polariton blockade regime are finally sketched. |
| title | Microscopic theory of polariton-polariton interactions |
| topic | Mesoscale and Nanoscale Physics Quantum Gases |
| url | https://arxiv.org/abs/2212.02597 |