Thermal excitation of multi-photon dressed states in circuit quantum electrodynamics

TitreThermal excitation of multi-photon dressed states in circuit quantum electrodynamics
Type de publicationJournal Article
Nouvelles publications2009
AuteursFink JM, Baur M, Bianchetti R, Filipp S, Goppl M, Leek PJ, Steffen L, Blais A, Wallraff A
JournalPHYSICA SCRIPTA
VolumeT137
ISBN0031-8949
RésuméThe 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.
DOI10.1088/0031-8949/2009/T137/014013