Floquet engineering of non-equilibrium superradiance
We demonstrate the emergence of a non-equilibrium superradiant phase in the dissipative Rabi-Dicke model. This phase is characterized by a photonic steady state that oscillates with a frequency close to the cavity frequency, in contrast to the constant photonic steady state of the equilibrium superr...
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| Format: | Article |
| Language: | English |
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SciPost
2023-02-01
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| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.14.2.018 |
| _version_ | 1811165022715379712 |
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| author | Lukas Broers, Ludwig Mathey |
| author_facet | Lukas Broers, Ludwig Mathey |
| author_sort | Lukas Broers, Ludwig Mathey |
| collection | DOAJ |
| description | We demonstrate the emergence of a non-equilibrium superradiant phase in the dissipative Rabi-Dicke model. This phase is characterized by a photonic steady state that oscillates with a frequency close to the cavity frequency, in contrast to the constant photonic steady state of the equilibrium superradiant phase in the Dicke model. We relate this superradiant phase to the population inversion of Floquet states by introducing a Schwinger representation of the driven two-level systems in the cavity. This inversion is depleted near Floquet energies that are resonant with the cavity frequency to sustain a coherent light-field. In particular, our model applies to solids within a two-band approximation, in which the electrons act as Schwinger fermions. We propose to use this Floquet-assisted superradiant phase to obtain controllable optical gain for a laser-like operation. |
| first_indexed | 2024-04-10T15:30:52Z |
| format | Article |
| id | doaj.art-0d0723d0afbc4978995f1f267bd2ffb6 |
| institution | Directory Open Access Journal |
| issn | 2542-4653 |
| language | English |
| last_indexed | 2024-04-10T15:30:52Z |
| publishDate | 2023-02-01 |
| publisher | SciPost |
| record_format | Article |
| series | SciPost Physics |
| spelling | doaj.art-0d0723d0afbc4978995f1f267bd2ffb62023-02-13T15:51:04ZengSciPostSciPost Physics2542-46532023-02-0114201810.21468/SciPostPhys.14.2.018Floquet engineering of non-equilibrium superradianceLukas Broers, Ludwig MatheyWe demonstrate the emergence of a non-equilibrium superradiant phase in the dissipative Rabi-Dicke model. This phase is characterized by a photonic steady state that oscillates with a frequency close to the cavity frequency, in contrast to the constant photonic steady state of the equilibrium superradiant phase in the Dicke model. We relate this superradiant phase to the population inversion of Floquet states by introducing a Schwinger representation of the driven two-level systems in the cavity. This inversion is depleted near Floquet energies that are resonant with the cavity frequency to sustain a coherent light-field. In particular, our model applies to solids within a two-band approximation, in which the electrons act as Schwinger fermions. We propose to use this Floquet-assisted superradiant phase to obtain controllable optical gain for a laser-like operation.https://scipost.org/SciPostPhys.14.2.018 |
| spellingShingle | Lukas Broers, Ludwig Mathey Floquet engineering of non-equilibrium superradiance SciPost Physics |
| title | Floquet engineering of non-equilibrium superradiance |
| title_full | Floquet engineering of non-equilibrium superradiance |
| title_fullStr | Floquet engineering of non-equilibrium superradiance |
| title_full_unstemmed | Floquet engineering of non-equilibrium superradiance |
| title_short | Floquet engineering of non-equilibrium superradiance |
| title_sort | floquet engineering of non equilibrium superradiance |
| url | https://scipost.org/SciPostPhys.14.2.018 |
| work_keys_str_mv | AT lukasbroersludwigmathey floquetengineeringofnonequilibriumsuperradiance |