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Adiabatic Transport of Cooper Pairs in Arrays of Small Josephson Junctions

In: Macroscopic Quantum Coherence and Quantum Computing

Author

Listed:
  • J. P. Pekola

    (University of Jyväskylä, Department of Physics)

  • J. J. Toppari

    (University of Jyväskylä, Department of Physics)

  • N. Kim

    (University of Jyväskylä, Department of Physics)

  • M. T. Savolainen

    (University of Jyväskylä, Department of Physics)

  • L. Taskinen

    (University of Jyväskylä, Department of Physics)

  • K. Hansen

    (University of Jyväskylä, Department of Physics)

Abstract

We present a quantitative theory of Cooper pair pumping in gated one-dimensional arrays of Josephson junctions. The pumping accuracy is limited by quantum tunneling of Cooper pairs out of the propagating potential well and by direct supercurrent flow through the array. Both corrections decrease exponentially with the number N of junctions in the array, but give a serious limitation of accuracy for any practical array. We also consider the Cooper pair trap and how it can be used to test the results experimentally.

Suggested Citation

  • J. P. Pekola & J. J. Toppari & N. Kim & M. T. Savolainen & L. Taskinen & K. Hansen, 2001. "Adiabatic Transport of Cooper Pairs in Arrays of Small Josephson Junctions," Springer Books, in: Dmitri V. Averin & Berardo Ruggiero & Paolo Silvestrini (ed.), Macroscopic Quantum Coherence and Quantum Computing, pages 127-136, Springer.
    • Handle: RePEc:spr:sprchp:978-1-4615-1245-5_13
    DOI: 10.1007/978-1-4615-1245-5_13
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