Adiabatic Transport of Cooper Pairs in Arrays of Small Josephson Junctions

J. P. Pekola, J. J. Toppari, N. Kim, M. T. Savolainen, L. Taskinen and K. Hansen
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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

A chapter in Macroscopic Quantum Coherence and Quantum Computing, 2001, pp 127-136 from Springer

Abstract: 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.

Keywords: Josephson junctions; quantum bits; Cooper pair pump (search for similar items in EconPapers)
Date: 2001
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-1-4615-1245-5_13

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DOI: 10.1007/978-1-4615-1245-5_13

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