We study the quantum Rabi model within the framework of the analytical solution developed in Phys. Rev. Lett. 107,100401 (2011). In particular, through time-dependent correlation functions, we give a quantitative criterion for classifying two regions of the quantum Rabi model, involving the Jaynes-Cummings, the ultrastrong, and deep strong coupling regimes. In addition, we find a stationary qubit-field entangled basis that governs the whole dynamics as the coupling strength overcomes the mode frequency.
Cite
@article{arxiv.1211.6469,
title = {Dynamical correlation functions and the quantum Rabi model},
author = {F. Alexander Wolf and Fabio Vallone and Guillermo Romero and Marcus Kollar and Enrique Solano and Daniel Braak},
journal= {arXiv preprint arXiv:1211.6469},
year = {2013}
}
Comments
8 pages, 8 figures. Revised version, accepted for publication in Physical Review A