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    Suppression of Dephasing by Qubit Motion in Superconducting Circuits

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    Averin_APS_2016.pdf (305.9Kb)
    Issue Date
    2016-01-08
    Author
    Averin, D. V.
    Xu, Kai
    Zhong, You-Peng
    Song, C.
    Wang, H.
    Han, Siyuan
    Publisher
    American Physical Society
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Rights
    © 2016 American Physical Society
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    Abstract
    We suggest and demonstrate a protocol which suppresses the low-frequency dephasing by qubit motion, i.e., transfer of the logical qubit of information in a system of n≥2 physical qubits. The protocol requires only the nearest-neighbor coupling and is applicable to different qubit structures. Our analysis of its effectiveness against noises with arbitrary correlations, together with experiments using up to three superconducting qubits, shows that for the realistic uncorrelated noises, qubit motion increases the dephasing time of the logical qubit as =√n. In general, the protocol provides a diagnostic tool for measurements of the noise correlations.
    Description
    This work was supported by the National Basic Research Program of China (Grants No. 2014CB921200 and No. 2012CB927404), U.S. NSF Grants No. PHY-1314758 and No. PHY-1314861, the National Natural Science Foundation of China (Grants No. 11434008 and No. 11222437), and the Zhejiang Provincial Natural Science Foundation of China (Grant No. LR12A04001).
    URI
    http://hdl.handle.net/1808/25271
    DOI
    https://doi.org/10.1103/PhysRevLett.116.010501
    Collections
    • Physics & Astronomy Scholarly Works [1744]
    Citation
    Averin, D., Xu, K., Zhong, Y., Song, C., Wang, H., & Han, S. (2016). Suppression of Dephasing by Qubit Motion in Superconducting Circuits. Physical Review Letters, 116(1). doi:10.1103/physrevlett.116.010501

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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