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29 March 2024
 
  » arxiv » 1107.0810

 Article overview


Selection rules in a strongly coupled qubit-resonator system
T. Niemczyk ; F. Deppe ; E. P. Menzel ; M. J. Schwarz ; H. Huebl ; F. Hocke ; M. Häberlein ; M. Danner ; E. Hoffmann ; A. Baust ; E. Solano ; J. J. Garcia-Ripoll ; A. Marx ; R. Gross ;
Date 5 Jul 2011
AbstractSuperconducting qubits acting as artificial two-level atoms allow for controlled variation of the symmetry properties which govern the selection rules for single and multiphoton excitation. We spectroscopically analyze a superconducting qubit-resonator system in the strong coupling regime under one- and two-photon driving. Our results provide clear experimental evidence for the controlled transition from an operating point governed by dipolar selection rules to a regime where one- and two-photon excitations of the artificial atom coexist. We find that the vacuum coupling between qubit and resonator can be straightforwardly extracted from the two-photon spectra where the detuned two-photon drive does not populate the relevant resonator mode significantly.
Source arXiv, 1107.0810
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