期刊
NATURE MATERIALS
卷 21, 期 7, 页码 767-+出版社
NATURE PORTFOLIO
DOI: 10.1038/s41563-022-01230-4
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资金
- EPSRC [EP/T023449/1, EP/S014403/1, EP/L015110/1]
- Royal Society [RGS\R2\192174]
- Carlsberg Foundation through the 'Semper Ardens' Research Project [QCooL]
- NSF
- DFG [SPP1929]
- Danish National Research Foundation through the Center of Excellence 'CCQ' [DNRF156]
- Carnegie Trust for the Universities of Scotland Research Incentive Grant [RIG009823]
- Australian Research Council Centre of Excellence for Engineered Quantum Systems [CE170100009]
- Institute for Theoretical Atomic, Molecular, and Optical Physics at Harvard University
In this study, the authors achieved strong coupling of light to Cu2O Rydberg excitons and demonstrated the formation of Cu2O Rydberg exciton-polaritons by embedding a thin Cu2O crystal into a Fabry-Perot microcavity. This paves the way towards realizing strongly interacting exciton-polaritons and exploring strongly correlated phases of matter using light on a chip.
Giant Rydberg excitons with principal quantum numbers as high as n = 25 have been observed in cuprous oxide (Cu2O), a semiconductor in which the exciton diameter can become as large as similar to 1 mu m. The giant dimension of these excitons results in excitonic interaction enhancements of orders of magnitude. Rydberg exciton-polaritons, formed by the strong coupling of Rydberg excitons to cavity photons, are a promising route to exploit these interactions and achieve a scalable, strongly correlated solid-state platform. However, the strong coupling of these excitons to cavity photons has remained elusive. Here, by embedding a thin Cu2O crystal into a Fabry-Perot microcavity, we achieve strong coupling of light to Cu2O Rydberg excitons up to n = 6 and demonstrate the formation of Cu2O Rydberg exciton-polaritons. These results pave the way towards realizing strongly interacting exciton-polaritons and exploring strongly correlated phases of matter using light on a chip. Cu2O is a promising platform to host Rydberg exciton-polaritons, where excitons strongly couple to cavity photons, however their realization has been elusive. Here, the authors report Rydberg exciton-polaritons with principal quantum numbers up to n = 6.
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