Flat-band compactons in a two-dimensional driven-dissipative Lieb lattice
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arXiv
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| Auteurs principaux: | , , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866912413019799552 |
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| author | Lovett, Seth Walker, Paul M. Ellul, Anthony Clarke, Edmund Skolnick, Maurice S. Krizhanovskii, Dmitry N. |
| author_facet | Lovett, Seth Walker, Paul M. Ellul, Anthony Clarke, Edmund Skolnick, Maurice S. Krizhanovskii, Dmitry N. |
| contents | We experimentally study the effect of inter-particle interactions on the flat-band states of a two-dimensional Lieb lattice with drive and dissipation. Exploiting the giant nonlinear interactions of exciton polaritons we observe compactly localised solitons (compactons) embedded within the continuum of propagating state bands -- a form of nonlinear bound state in the continuum (BIC). The driven-dissipative nature of the system leads to a sudden self-localisation into the compacton state above a threshold power. The experimental results agree well with numerical simulations. These results have implications for the physics of interacting quantum particles in flat-band systems and for generation of quantum-correlated light and spatially multiplexed coherent information transport. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_03963 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Flat-band compactons in a two-dimensional driven-dissipative Lieb lattice Lovett, Seth Walker, Paul M. Ellul, Anthony Clarke, Edmund Skolnick, Maurice S. Krizhanovskii, Dmitry N. Other Condensed Matter Mesoscale and Nanoscale Physics We experimentally study the effect of inter-particle interactions on the flat-band states of a two-dimensional Lieb lattice with drive and dissipation. Exploiting the giant nonlinear interactions of exciton polaritons we observe compactly localised solitons (compactons) embedded within the continuum of propagating state bands -- a form of nonlinear bound state in the continuum (BIC). The driven-dissipative nature of the system leads to a sudden self-localisation into the compacton state above a threshold power. The experimental results agree well with numerical simulations. These results have implications for the physics of interacting quantum particles in flat-band systems and for generation of quantum-correlated light and spatially multiplexed coherent information transport. |
| title | Flat-band compactons in a two-dimensional driven-dissipative Lieb lattice |
| topic | Other Condensed Matter Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2506.03963 |