Landau-Zener transitions in a superconducting flux qubit
Name
PhysRevB.80.012507.pdf
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159.49 KB
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Author(s)
Johansson, J.
Amin, M. H. S.
Berkley, A. J.
Bunyk, P.
Choi, V.
Harris, R.
Johnson, M. W.
Lanting, T. M.
Lloyd, Seth
Rose, G.
Date Issued
July 21, 2009
Publisher
American Physical Society (APS)
Citation
Johansson, J., Amin, M. H. S., Berkley, A. J., Bunyk, P., Choi, V. et al. 2009. "Landau-Zener transitions in a superconducting flux qubit." 80 (1).
Version
Final published version
Abstract
We report an experimental measurement of Landau-Zener transitions on an individual flux qubit within a multiqubit superconducting chip. The method used isolates a single qubit, tunes its tunneling amplitude
Δ
into the limit where
Δ
is much less than both the temperature
T
and the decoherence-induced energy level broadening, and forces it to undergo a Landau-Zener transition. We find that the behavior of the qubit agrees to a high degree of accuracy with theoretical predictions for Landau-Zener transition probabilities for a double-well quantum system coupled to a nonMarkovian
1
/
f
Subjects
Condensed Matter Physics
Electronic, Optical and Magnetic Materials
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/physrevb.80.012507
