Publications associated with Superconducting Quantum Devices


Thermal Excitation of Multi-Photon Dressed States in Circuit Quantum Electrodynamics

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JM Fink, M Baur, R Bianchetti, S Filipp, M Göppl, PJ Leek, L Steffen, A Blais, A Wallraff

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 indicates that the role of thermal fields in resonant cavity QED can be studied in detail using superconducting circuits.


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