Publications associated with Superconducting Quantum Devices


Measurement of Autler-Townes and Mollow transitions in a strongly driven superconducting qubit

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

We present spectroscopic measurements of the Autler-Townes doublet and the sidebands of the Mollow triplet in a driven superconducting qubit. The ground to first excited state transition of the qubit is strongly pumped while the resulting dressed qubit spectrum is probed with a weak tone. The corresponding transitions are detected using dispersive read-out of the qubit coupled off-resonantly to a microwave transmission line resonator. The observed frequencies of the Autler-Townes and Mollow spectral lines are in good agreement with a dispersive Jaynes-Cummings model taking into account higher excited qubit states and dispersive level shifts due to off-resonant drives.


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