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Superconducting Qubits
Multiphonon transitions in a quantum electromechanical system
arXiv
Authors: Alpo Välimaa, Wayne Crump, Mikael Kervinen, Mika A. Sillanpää
Year
2021
Paper ID
62387
Status
Preprint
Abstract Read
~2 min
Abstract Words
69
Citations
N/A
Abstract
We investigate a superconducting qubit coupled to a quantum acoustic system in a near resonant configuration. In our system we measure multiphonon transitions, whose spectrum reveals distinctly nonclassical features and thus provides direct evidence of quantization of GHz sound, enabling phonon counting. Additionally, at a high driving amplitude comparable to the qubit-oscillator coupling, we observe a shift of the multiphonon spectral lines owing to dressing of many multiphonon transitions.
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- This paper contributes to the Superconducting Qubits research area in the Quantum Articles archive.
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- We investigate a superconducting qubit coupled to a quantum acoustic system in a near resonant configuration.
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