Multimode-polariton superradiance via Floquet engineering
- We consider an ensemble of ultracold bosonic atoms within a near-planar cavity, driven by a far detuned laser whose phase is modulated at a frequency comparable to the transverse cavity mode spacing. We show that a strong, dispersive atom-photon coupling can be reached for many transverse cavity modes at once. The resulting Floquet polaritons involve a superposition of a set of cavity modes with a density excitation of the atomic cloud. The mutual interactions between these modes lead to distinct avoided crossings between the polaritons. Increasing the laser drive intensity, a low-lying multimode Floquet polariton softens and eventually becomes undamped, corresponding to the transition to a superradiant, self-organized phase. We demonstrate the stability of the stationary state for a broad range of parameters.
| Author: | Christian H. Johansen, Johannes Lang, Andrea Morales, Alexander Baumgärtner, Tobias Donner, Francesco PiazzaORCiDGND |
|---|---|
| URN: | urn:nbn:de:bvb:384-opus4-1084113 |
| Frontdoor URL | https://opus.bibliothek.uni-augsburg.de/opus4/108411 |
| ISSN: | 2542-4653OPAC |
| Parent Title (English): | SciPost Physics |
| Publisher: | Stichting SciPost |
| Type: | Article |
| Language: | English |
| Year of first Publication: | 2022 |
| Publishing Institution: | Universität Augsburg |
| Release Date: | 2023/10/16 |
| Tag: | General Physics and Astronomy |
| Volume: | 12 |
| Issue: | 3 |
| First Page: | 094 |
| DOI: | https://doi.org/10.21468/scipostphys.12.3.094 |
| Institutes: | Mathematisch-Naturwissenschaftlich-Technische Fakultät |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik | |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik / Lehrstuhl für Theoretische Physik III | |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Licence (German): |  CC-BY 4.0: Creative Commons: Namensnennung |
