Tailored subcycle nonlinearities of ultrastrong light-matter coupling

• URL: http://arxiv.org/abs/2011.14635v1
• Date: Mon, 30 Nov 2020 09:20:11 GMT
• Title: Tailored subcycle nonlinearities of ultrastrong light-matter coupling
• Authors: J. Mornhinweg (1), M. Halbhuber (1), C. Ciuti (2), D. Bougeard (1), R. Huber (1), C. Lange (1 and 3) ((1) Department of Physics, University of Regensburg, Germany, (2) Universit\'e de Paris, Laboratoire Mat\'eriaux et Ph\'enom\`enes Quantiques, CNRS, France, (3) Fakult\"at Physik, Technische Universit\"at Dortmund, Germany)
• Abstract summary: 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. We expect such custom-cut nonlinearities of hybridized elementary excitations to facilitate non-classical light sources, quantum phase transitions, or cavity chemistry with virtual photons.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: 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 multi-wave 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 non-classical light sources, quantum phase transitions, or cavity chemistry with virtual photons.

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