Recurrent delocalization and quasi-equilibration of photons in coupled circuit QED systems
arXiv:1602.06145 · doi:10.1103/PhysRevLett.116.153601
Abstract
We explore the photon population dynamics in two coupled circuit QED systems. For a sufficiently weak inter-cavity photon hopping, as the photon-cavity coupling increases, the dynamics undergoes double transitions first from a delocalized to a localized phase and then from the localized to another delocalized phase. The latter delocalized phase is distinguished from the former one; instead of oscillating between the two cavities, the photons rapidly quasi-equilibrate over the two cavities. These intrigues are attributed to an interplay between two qualitatively distinctive nonlinear behaviors of the circuit QED systems in the utrastrong coupling regime, whose distinction has been widely overlooked.
arXiv comment5 pages; 3 figures; a typo on page 4 corrected; a change in acknowledgments
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