Measurement of Autler-Townes and Mollow Transitions in a Strongly Driven Superconducting Qubit

M. Baur, S. Filipp, R. Bianchetti, J. M. Fink, M. Göppl, L. Steffen, P. J. Leek, A. Blais, and A. Wallraff
Phys. Rev. Lett. 102, 243602 – Published 19 June 2009

Abstract

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 readout 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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  • Received 3 March 2009

DOI:https://doi.org/10.1103/PhysRevLett.102.243602

©2009 American Physical Society

Authors & Affiliations

M. Baur1, S. Filipp1, R. Bianchetti1, J. M. Fink1, M. Göppl1, L. Steffen1, P. J. Leek1, A. Blais2, and A. Wallraff1

  • 1Department of Physics, ETH Zurich, CH-8093 Zurich, Switzerland
  • 2Département de Physique, Université de Sherbrooke, Sherbrooke, Québec J1K2R1, Canada

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Vol. 102, Iss. 24 — 19 June 2009

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