Dicke superradiance in ordered arrays of multilevel atoms
| Autor: | Masson, Stuart J., Covey, Jacob P., Will, Sebastian, Asenjo-Garcia, Ana |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | PRX Quantum 5 (2024) 010344 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PRXQuantum.5.010344 |
| Popis: | In inverted atomic ensembles, photon-mediated interactions give rise to Dicke superradiance, a form of many-body decay that results in a rapid release of energy as a photon burst. While originally studied in pointlike ensembles, this phenomenon persists in extended ordered systems if the inter-particle distance is below a certain bound. Here, we investigate Dicke superradiance in a realistic experimental setting using ordered arrays of alkaline-earth(-like) atoms, such as strontium and ytterbium. Such atoms offer exciting new opportunities for light-matter interactions as their internal structure allows for trapping at short interatomic distances compared to their long-wavelength transitions, providing the potential for collectively enhanced dissipative interactions. Despite their intricate electronic structure, we show that two-dimensional arrays of these atomic species should exhibit many-body superradiance for achievable lattice constants. Moreover, superradiance effectively ``closes'' transitions, such that multilevel atoms become more two-level like. This occurs because the avalanchelike decay funnels the emission of most photons into the dominant transition, overcoming the single-atom decay ratios dictated by their fine structure and Zeeman branching. Our work represents an important step in harnessing alkaline-earth atoms as quantum optical sources and as platforms to explore many-body dissipative dynamics. Comment: 10 + 9 pages, 7 + 3 figures, 2 tables. This version is in line with the published version |
| Databáze: | arXiv |
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