Single Cooper-pair pumping in the adiabatic limit and beyond
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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5
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Physical Review B, Volume 86, issue 6, pp. 1-5
Abstract
We demonstrate controlled pumping of Cooper pairs down to the level of a single pair per cycle, using an rf-driven Cooper-pair sluice. We also investigate the breakdown of the adiabatic dynamics in two different ways. By transferring many Cooper pairs at a time, we observe a crossover between pure Cooper-pair and mixed Cooper-pair-quasiparticle transport. By tuning the Josephson coupling that governs Cooper-pair tunneling, we characterize Landau-Zener transitions in our device. Our data are quantitatively accounted for by a simple model including decoherence effects.Description
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Gasparinetti, S, Solinas, P, Yoon, Y & Pekola, J P 2012, 'Single Cooper-pair pumping in the adiabatic limit and beyond', Physical Review B, vol. 86, no. 6, 060502, pp. 1-5. https://doi.org/10.1103/PhysRevB.86.060502