Bound polariton states in the Dicke–Ising model
We present a study of hybrid light–matter excitations in cavity QED materials using the Dicke–Ising model as a theoretical framework. Leveraging linear response theory, we derive the exact excitations of the system in the thermodynamic limit. Our results demonstrate that the cavity can localize spin...
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| Format: | Article |
| Language: | English |
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De Gruyter
2025-02-01
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| Series: | Nanophotonics |
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| Online Access: | https://doi.org/10.1515/nanoph-2024-0568 |
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| _version_ | 1850100456110424064 |
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| author | Román-Roche Juan Gómez-León Álvaro Luis Fernando Zueco David |
| author_facet | Román-Roche Juan Gómez-León Álvaro Luis Fernando Zueco David |
| author_sort | Román-Roche Juan |
| collection | DOAJ |
| description | We present a study of hybrid light–matter excitations in cavity QED materials using the Dicke–Ising model as a theoretical framework. Leveraging linear response theory, we derive the exact excitations of the system in the thermodynamic limit. Our results demonstrate that the cavity can localize spin excitations, leading to the formation of bound polaritons, where the cavity acts as an impurity of the two-excitation band, localizing spin-wave pairs around single-spin domains. We derive the condition for the existence of these bound states and discuss its satisfiability in different regimes. Finally, we show that these effects persist in finite systems using exact-diagonalization calculations. |
| format | Article |
| id | doaj-art-5d0cae72713841469d5b005bfa76ef13 |
| institution | DOAJ |
| issn | 2192-8614 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj-art-5d0cae72713841469d5b005bfa76ef132025-08-20T02:40:18ZengDe GruyterNanophotonics2192-86142025-02-0114112053206410.1515/nanoph-2024-0568Bound polariton states in the Dicke–Ising modelRomán-Roche Juan0Gómez-León Álvaro1Luis Fernando2Zueco David3Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza50009, SpainInstitute of Fundamental Physics IFF-CSIC, Calle Serrano 113b, 28006Madrid, SpainInstituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza50009, SpainInstituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza50009, SpainWe present a study of hybrid light–matter excitations in cavity QED materials using the Dicke–Ising model as a theoretical framework. Leveraging linear response theory, we derive the exact excitations of the system in the thermodynamic limit. Our results demonstrate that the cavity can localize spin excitations, leading to the formation of bound polaritons, where the cavity acts as an impurity of the two-excitation band, localizing spin-wave pairs around single-spin domains. We derive the condition for the existence of these bound states and discuss its satisfiability in different regimes. Finally, we show that these effects persist in finite systems using exact-diagonalization calculations.https://doi.org/10.1515/nanoph-2024-0568cavity qed materialsbound statesquantum materials |
| spellingShingle | Román-Roche Juan Gómez-León Álvaro Luis Fernando Zueco David Bound polariton states in the Dicke–Ising model Nanophotonics cavity qed materials bound states quantum materials |
| title | Bound polariton states in the Dicke–Ising model |
| title_full | Bound polariton states in the Dicke–Ising model |
| title_fullStr | Bound polariton states in the Dicke–Ising model |
| title_full_unstemmed | Bound polariton states in the Dicke–Ising model |
| title_short | Bound polariton states in the Dicke–Ising model |
| title_sort | bound polariton states in the dicke ising model |
| topic | cavity qed materials bound states quantum materials |
| url | https://doi.org/10.1515/nanoph-2024-0568 |
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