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Non-abelian superconducting pumps

Valentina Brosco·Rosario Fazio·F. W. J. Hekking·Alain Joye
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Abstract

Cooper pair pumping is a coherent process. We derive a general expression for the adiabatic pumped charge in superconducting nanocircuits in the presence of level degeneracy and relate it to non-Abelian holonomies of Wilczek and Zee. We discuss an experimental system where the non-Abelian structure of the adiabatic evolution manifests in the pumped charge.

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Valentina Brosco, Rosario Fazio, F. W. J. Hekking, Alain Joye. 2008-02-22. Non-abelian superconducting pumps. https://doi.org/10.1103/physrevlett.100.027002

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