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|
|Data di pubblicazione:||2013|
|Appare nelle tipologie:||1.1 Articolo in rivista|