4.6 Article

Multiphoton spectroscopy of a hybrid quantum system

期刊

PHYSICAL REVIEW B
卷 82, 期 13, 页码 -

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AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.82.134530

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  1. CFN of DFG
  2. EU
  3. EuroSQIP
  4. MIDAS
  5. U.S. ARO [W911NF-09-1-0336]

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We report on experimental multiphoton spectroscopy of a hybrid quantum system consisting of a superconducting phase qubit coherently coupled to an intrinsic two-level system (TLS). We directly probe hybridized states of the combined qubit-TLS system in the strongly interacting regime, where both the qubit-TLS coupling and the driving cannot be considered as weak perturbations. This regime is described by a theoretical model which incorporates anharmonic corrections, multiphoton processes and decoherence. We present a detailed comparison between experiment and theory and find excellent agreement over a wide range of parameters.

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