Fast and accurate single-island charge pump: implementation

Antti O. Niskanen, Jukka Pekola, Heikki Seppä

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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.
Original languageEnglish
Article number177003
Pages (from-to)1-4
Number of pages4
JournalPhysical Review Letters
Volume91
Issue number17
DOIs
Publication statusPublished - 24 Oct 2003
MoE publication typeA1 Journal article-refereed

Keywords

  • Cooper pair pump
  • single-electron

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