We study the extracavity quantum vacuum radiation generated by a sudden switch on and off of the vacuum Rabi frequency of a single two-level system coupled to a single cavity mode in the strong and ultrastrong coupling regime. Dissipation is described by including the qubit-resonator coupling in the derivation of the master equation. The output stream of photons and their second-order correlation functions are calculated by exploiting a recently developed input-output formulation of resonators valid for arbitrary light-matter couplings. The obtained output photon correlations provide direct information on the quantum correlations among the virtual excitations of the dressed vacuum. © 2013 American Physical Society.
Titolo: | Switching on and off of ultrastrong light-matter interaction: Photon statistics of quantum vacuum radiation | |
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Data di pubblicazione: | 2013 | |
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Handle: | http://hdl.handle.net/20.500.11769/358233 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |