Single Cooper-pair pumping in the adiabatic limit and beyond
Loading...
Journal Title
Journal ISSN
Volume Title
School of Science |
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Unless otherwise stated, all rights belong to the author. You may download, display and print this publication for Your own personal use. Commercial use is prohibited.
Date
2012
Major/Subject
Mcode
Degree programme
Language
en
Pages
060502/1-5
Series
Physical Review B, Volume 86, Issue 6
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
Keywords
Cooper pairs, pumping, adiabatic dynamics, Landau-Zener transitions
Citation
Gasparinetti, S. & Solinas, P. & Yoon, Y. & Pekola, Jukka. 2012. Single Cooper-pair pumping in the adiabatic limit and beyond. Physical Review B. Volume 86, Issue 6. 060502/1-5. ISSN 1098-0121 (printed). DOI: 10.1103/physrevb.86.060502.
