Fast and accurate single-island charge pump: implementation

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Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Author
Date
2003-10-24
Department
Department of Applied Physics
Major/Subject
Mcode
Degree programme
Language
en
Pages
4
1-4
Series
PHYSICAL REVIEW LETTERS, Volume 91, issue 17
Abstract
We introduce a Cooper pair “sluice” for the implementation of a frequency-locked current source. The device consists of two mesoscopic SQUIDs and of a single superconducting island with a gate. We demonstrate theoretically that it is possible to obtain a current as high as 0.1 nA at better than ppm accuracy via periodically modulating both the gate charge and the effective Josephson coupling. We find that the device is tolerant against background charge noise and operates well even in a dissipative environment. The effect of the imperfect suppression of the Josephson coupling and the finite operating frequency are also investigated.
Description
Keywords
Cooper pair pump, single-electron
Other note
DOI
10.1103/PhysRevLett.91.177003
Citation
Niskanen , A O , Pekola , J & Seppä , H 2003 , ' Fast and accurate single-island charge pump: implementation ' , Physical Review Letters , vol. 91 , no. 17 , 177003 , pp. 1-4 . https://doi.org/10.1103/PhysRevLett.91.177003
Permanent link to this item
https://urn.fi/URN:NBN:fi:aalto-201805222282
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[article-cris] Perustieteiden korkeakoulu / SCI