@article{1771,
  abstract     = {The exceptionally strong coupling realizable between superconducting qubits and photons stored in an on-chip microwave resonator allows for the detailed study of matter-light interactions in the realm of circuit quantum electrodynamics (QED). Here we investigate the resonant interaction between a single transmon-type multilevel artificial atom and weak thermal and coherent fields. We explore up to three photon dressed states of the coupled system in a linear response heterodyne transmission measurement. The results are in good quantitative agreement with a generalized Jaynes-Cummings model. Our data indicate that the role of thermal fields in resonant cavity QED can be studied in detail using superconducting circuits.},
  author       = {Johannes Fink and Baur, Matthias P and Bianchetti, R and Filipp, Stefan and Göppl, M and Leek, Peter J and Steffen, L. Kraig and Blais, Alexandre and Wallraff, Andreas},
  journal      = {Physica Scripta T},
  publisher    = {IOP Publishing Ltd.},
  title        = {{Thermal excitation of multi-photon dressed states in circuit quantum electrodynamics}},
  doi          = {10.1088/0031-8949/2009/T137/014013},
  volume       = {T137},
  year         = {2009},
}