期刊
PHYSICAL REVIEW LETTERS
卷 126, 期 17, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.126.177404
关键词
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资金
- DFG [LA 3307/1-2, BO 3140/3-2, HU 1598/8]
- European Research Council (ERC) through Future and Emerging Technologies (FET) [737017]
We investigate the nonlinear response of tailor-cut light-matter hybrid states in a novel regime where the Rabi frequency induced by a coherent driving field and the vacuum Rabi frequency set by a cavity field are comparable to the carrier frequency of light. In this previously unexplored strong-field limit of ultrastrong coupling, subcycle pump-probe and multiwave mixing nonlinearities between different polariton states violate the normal-mode approximation while ultrastrong coupling remains intact. We anticipate that such custom-cut nonlinearities of hybridized elementary excitations will facilitate nonclassical light sources, quantum phase transitions, or cavity chemistry with virtual photons.
We explore the nonlinear response of tailor-cut light-matter hybrid states in a novel regime, where both the Rabi frequency induced by a coherent driving field and the vacuum Rabi frequency set by a cavity field are comparable to the carrier frequency of light. In this previously unexplored strong-field limit of ultrastrong coupling, subcycle pump-probe and multiwave mixing nonlinearities between different polariton states violate the normal-mode approximation while ultrastrong coupling remains intact, as confirmed by our mean-field model. We expect such custom-cut nonlinearities of hybridized elementary excitations to facilitate nonclassical light sources, quantum phase transitions, or cavity chemistry with virtual photons.
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