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 themaster 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.
Switching on and off of ultrastrong light-matter interaction: Photon statistics of quantum vacuum radiation
R. Stassi;DI STEFANO, Omar;SAVASTA, Salvatore
2013-01-01
Abstract
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 themaster 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.Pubblicazioni consigliate
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