Dirac exciton–polariton condensates in photonic crystal gratings
Bound states in the continuum have recently been utilized in photonic crystal gratings to achieve strong coupling and ultralow threshold condensation of exciton–polariton quasiparticles with atypical Dirac-like features in their dispersion relation. Here, we develop the single- and many-body theory...
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| Format: | Article |
| Language: | English |
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De Gruyter
2024-02-01
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| Series: | Nanophotonics |
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| Online Access: | https://doi.org/10.1515/nanoph-2023-0834 |
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| author | Sigurðsson Helgi Nguyen Hai Chau Nguyen Hai Son |
| author_facet | Sigurðsson Helgi Nguyen Hai Chau Nguyen Hai Son |
| author_sort | Sigurðsson Helgi |
| collection | DOAJ |
| description | Bound states in the continuum have recently been utilized in photonic crystal gratings to achieve strong coupling and ultralow threshold condensation of exciton–polariton quasiparticles with atypical Dirac-like features in their dispersion relation. Here, we develop the single- and many-body theory of these new effective relativistic polaritonic modes and describe their mean-field condensation dynamics facilitated by the interplay between protection from the radiative continuum and negative-mass optical trapping. Our theory accounts for tunable grating parameters giving full control over the diffractive coupling properties between guided polaritons and the radiative continuum, unexplored for polariton condensates. In particular, we discover stable cyclical condensate solutions mimicking a driven-dissipative analog of the zitterbewegung effect characterized by coherent superposition of ballistic and trapped polariton waves. We clarify important distinctions between the polariton nearfield and farfield explaining recent experiments on the emission characteristics of these long lived nonlinear Dirac polaritons. |
| format | Article |
| id | doaj-art-8e4dda1e661c451591cbfa4b64b8da0d |
| institution | DOAJ |
| issn | 2192-8614 |
| language | English |
| publishDate | 2024-02-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj-art-8e4dda1e661c451591cbfa4b64b8da0d2025-08-20T02:49:30ZengDe GruyterNanophotonics2192-86142024-02-0113183503351810.1515/nanoph-2023-0834Dirac exciton–polariton condensates in photonic crystal gratingsSigurðsson Helgi0Nguyen Hai Chau1Nguyen Hai Son2Faculty of Physics, 49605Institute of Experimental Physics, University of Warsaw, ul. Pasteura 5, PL-02-093Warsaw, Poland14312Naturwissenschaftlich-Technische Fakultät, Universität Siegen, Walter-Flex-Straße 3, 57068Siegen, GermanyUniv Lyon, Ecole Centrale de Lyon, INSA Lyon, Université Claude Bernard Lyon 1, CPE Lyon, CNRS, INL, UMR5270, Ecully69130, FranceBound states in the continuum have recently been utilized in photonic crystal gratings to achieve strong coupling and ultralow threshold condensation of exciton–polariton quasiparticles with atypical Dirac-like features in their dispersion relation. Here, we develop the single- and many-body theory of these new effective relativistic polaritonic modes and describe their mean-field condensation dynamics facilitated by the interplay between protection from the radiative continuum and negative-mass optical trapping. Our theory accounts for tunable grating parameters giving full control over the diffractive coupling properties between guided polaritons and the radiative continuum, unexplored for polariton condensates. In particular, we discover stable cyclical condensate solutions mimicking a driven-dissipative analog of the zitterbewegung effect characterized by coherent superposition of ballistic and trapped polariton waves. We clarify important distinctions between the polariton nearfield and farfield explaining recent experiments on the emission characteristics of these long lived nonlinear Dirac polaritons.https://doi.org/10.1515/nanoph-2023-0834photonic gratingbound state in the continuumexciton-polaritonpolariton condensate |
| spellingShingle | Sigurðsson Helgi Nguyen Hai Chau Nguyen Hai Son Dirac exciton–polariton condensates in photonic crystal gratings Nanophotonics photonic grating bound state in the continuum exciton-polariton polariton condensate |
| title | Dirac exciton–polariton condensates in photonic crystal gratings |
| title_full | Dirac exciton–polariton condensates in photonic crystal gratings |
| title_fullStr | Dirac exciton–polariton condensates in photonic crystal gratings |
| title_full_unstemmed | Dirac exciton–polariton condensates in photonic crystal gratings |
| title_short | Dirac exciton–polariton condensates in photonic crystal gratings |
| title_sort | dirac exciton polariton condensates in photonic crystal gratings |
| topic | photonic grating bound state in the continuum exciton-polariton polariton condensate |
| url | https://doi.org/10.1515/nanoph-2023-0834 |
| work_keys_str_mv | AT sigurðssonhelgi diracexcitonpolaritoncondensatesinphotoniccrystalgratings AT nguyenhaichau diracexcitonpolaritoncondensatesinphotoniccrystalgratings AT nguyenhaison diracexcitonpolaritoncondensatesinphotoniccrystalgratings |